#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include<iostream>
#include<string>
#include<cstdio>
#include<vector>
#include<cmath>
#include<algorithm>
#include<functional>
#include<iomanip>
#include<queue>
#include<ciso646>
#include<random>
#include<map>
#include<set>
#include<bitset>
#include<stack>
#include<unordered_map>
#include<unordered_set>
#include<utility>
#include<cassert>
#include<complex>
#include<numeric>
#include<array>
#include<chrono>
using namespace std;

//#define int long long
typedef long long ll;

typedef unsigned long long ul;
typedef unsigned int ui;
ll mod = 1;
//constexpr ll mod = 998244353;
//constexpr ll mod = 1000000007;
const int mod17 = 1000000007;
const ll INF = mod * mod;
typedef pair<int, int>P;

#define rep(i,n) for(int i=0;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define Rep(i,sta,n) for(int i=sta;i<n;i++)
#define rep1(i,n) for(int i=1;i<=n;i++)
#define per1(i,n) for(int i=n;i>=1;i--)
#define Rep1(i,sta,n) for(int i=sta;i<=n;i++)
#define all(v) (v).begin(),(v).end()
typedef pair<ll, ll> LP;

using ld = double;
typedef pair<ld, ld> LDP;
const ld eps = 1e-10;
const ld pi = acosl(-1.0);

template<typename T>
void chmin(T& a, T b) {
    a = min(a, b);
}
template<typename T>
void chmax(T& a, T b) {
    a = max(a, b);
}
template<typename T>
vector<T> vmerge(vector<T>& a, vector<T>& b) {
    vector<T> res;
    int ida = 0, idb = 0;
    while (ida < a.size() || idb < b.size()) {
        if (idb == b.size()) {
            res.push_back(a[ida]); ida++;
        }
        else if (ida == a.size()) {
            res.push_back(b[idb]); idb++;
        }
        else {
            if (a[ida] < b[idb]) {
                res.push_back(a[ida]); ida++;
            }
            else {
                res.push_back(b[idb]); idb++;
            }
        }
    }
    return res;
}
template<typename T>
void cinarray(vector<T>& v) {
    rep(i, v.size())cin >> v[i];
}
template<typename T>
void coutarray(vector<T>& v) {
    rep(i, v.size()) {
        if (i > 0)cout << " "; cout << v[i];
    }
    cout << "\n";
}
ll mod_pow(ll x, ll n, ll m = mod) {
    if (n < 0) {
        ll res = mod_pow(x, -n, m);
        return mod_pow(res, m - 2, m);
    }
    if (abs(x) >= m)x %= m;
    if (x < 0)x += m;
    //if (x == 0)return 0;
    ll res = 1;
    while (n) {
        if (n & 1)res = res * x % m;
        x = x * x % m; n >>= 1;
    }
    return res;
}
//mod should be <2^31
struct modint {
    int n;
    modint() :n(0) { ; }
    modint(ll m) {
        if (m < 0 || mod <= m) {
            m %= mod; if (m < 0)m += mod;
        }
        n = m;
    }
    operator int() { return n; }
};
bool operator==(modint a, modint b) { return a.n == b.n; }
bool operator<(modint a, modint b) { return a.n < b.n; }
modint operator+=(modint& a, modint b) { a.n += b.n; if (a.n >= mod)a.n -= (int)mod; return a; }
modint operator-=(modint& a, modint b) { a.n -= b.n; if (a.n < 0)a.n += (int)mod; return a; }
modint operator*=(modint& a, modint b) { a.n = ((ll)a.n * b.n) % mod; return a; }
modint operator+(modint a, modint b) { return a += b; }
modint operator-(modint a, modint b) { return a -= b; }
modint operator*(modint a, modint b) { return a *= b; }
modint operator^(modint a, ll n) {
    if (n == 0)return modint(1);
    modint res = (a * a) ^ (n / 2);
    if (n % 2)res = res * a;
    return res;
}

ll inv(ll a, ll p) {
    return (a == 1 ? 1 : (1 - p * inv(p % a, a)) / a + p);
}
modint operator/(modint a, modint b) { return a * modint(inv(b, mod)); }
modint operator/=(modint& a, modint b) { a = a / b; return a; }
const int max_n = 1 << 20;
modint fact[max_n], factinv[max_n];
void init_f() {
    fact[0] = modint(1);
    for (int i = 0; i < max_n - 1; i++) {
        fact[i + 1] = fact[i] * modint(i + 1);
    }
    factinv[max_n - 1] = modint(1) / fact[max_n - 1];
    for (int i = max_n - 2; i >= 0; i--) {
        factinv[i] = factinv[i + 1] * modint(i + 1);
    }
}
modint comb(int a, int b) {
    if (a < 0 || b < 0 || a < b)return 0;
    return fact[a] * factinv[b] * factinv[a - b];
}
modint combP(int a, int b) {
    if (a < 0 || b < 0 || a < b)return 0;
    return fact[a] * factinv[a - b];
}

ll gcd(ll a, ll b) {
    a = abs(a); b = abs(b);
    if (a < b)swap(a, b);
    while (b) {
        ll r = a % b; a = b; b = r;
    }
    return a;
}
template<typename T>
void addv(vector<T>& v, int loc, T val) {
    if (loc >= v.size())v.resize(loc + 1, 0);
    v[loc] += val;
}
/*const int mn = 2000005;
bool isp[mn];
vector<int> ps;
void init() {
    fill(isp + 2, isp + mn, true);
    for (int i = 2; i < mn; i++) {
        if (!isp[i])continue;
        ps.push_back(i);
        for (int j = 2 * i; j < mn; j += i) {
            isp[j] = false;
        }
    }
}*/

//[,val)
template<typename T>
auto prev_itr(set<T>& st, T val) {
    auto res = st.lower_bound(val);
    if (res == st.begin())return st.end();
    res--; return res;
}

//[val,)
template<typename T>
auto next_itr(set<T>& st, T val) {
    auto res = st.lower_bound(val);
    return res;
}
using mP = pair<modint, modint>;
mP operator+(mP a, mP b) {
    return { a.first + b.first,a.second + b.second };
}
mP operator+=(mP& a, mP b) {
    a = a + b; return a;
}
mP operator-(mP a, mP b) {
    return { a.first - b.first,a.second - b.second };
}
mP operator-=(mP& a, mP b) {
    a = a - b; return a;
}
LP operator+(LP a, LP b) {
    return { a.first + b.first,a.second + b.second };
}
LP operator+=(LP& a, LP b) {
    a = a + b; return a;
}
LP operator-(LP a, LP b) {
    return { a.first - b.first,a.second - b.second };
}
LP operator-=(LP& a, LP b) {
    a = a - b; return a;
}

mt19937 mt(time(0));

const string drul = "DRUL";
string senw = "SENW";
//DRUL,or SENW
//int dx[4] = { 1,0,-1,0 };
//int dy[4] = { 0,1,0,-1 };

//------------------------------------

struct LowLink {
private:
	vector<vector<int>> G;
	vector<int> used, ord, low;
	vector<int> art;

	//make graph with bridge
	vector<vector<int>> fG;
	vector<vector<int>> ori;
	vector<int> trans;
public:
	LowLink(int n) {
		G.resize(n);
		used.resize(n, 0);
		ord.resize(n, 0);
		low.resize(n, 0);
	}
	void add_edge(int a, int b) {
		if (a == b)return;
		G[a].push_back(b);
		G[b].push_back(a);
	}
	int dfs(int id, int k, int par) {
		used[id] = true;
		ord[id] = k++;
		low[id] = ord[id];
		bool is_art = false;
		int cnt = 0;
		for (auto&& to : G[id]) {
			if (!used[to]) {
				++cnt;
				k = dfs(to, k, id);
				low[id] = min(low[id], low[to]);
				if (~par && low[to] >= ord[id])is_art = true;
			}
			else if (to != par) {
				low[id] = min(low[id], ord[to]);
			}
		}
		if (par == -1 && cnt > 1)is_art = true;
		if (is_art)art.push_back(id);
		return k;
	}
	void complete() {
		int k = 0;
		rep(i, G.size()) {
			if (!used[i]) {
				k = dfs(i, k, -1);
			}
		}

	}
	vector<int> arts() {
		return art;
	}
	vector<bool> isart;
	int dfs2(int id, int par, int nm, int& tmp) {
		trans[id] = nm;
		ori[nm].push_back(id);
		used[id] = true;
		int memo = nm;
		if (isart[id]) {
			if (par >= 0) {
				fG[id].push_back(nm);
				fG[nm].push_back(id);
				nm = tmp; tmp++;
				ori[nm].push_back(id);
			}
			for (int to : G[id])if (!used[to]) {
				if (low[to] < ord[id]) {
					dfs2(to, id, memo, tmp);
				}
				else {
					fG[id].push_back(nm);
					fG[nm].push_back(id);
					int memo2 = nm;
					nm = tmp; tmp++;
					ori[nm].push_back(id);
					dfs2(to, id, memo2, tmp);
				}
			}
		}
		else {
			for (int to : G[id])if (!used[to]) {
				dfs2(to, id, nm, tmp);
			}
		}
		return memo;
	}
	//root is n
	//number of vertice is less than N+2*M
	void makegraph_vertice(int sz) {
		int n = G.size();
		fG.resize(sz);
		ori.resize(sz);
		trans.resize(n);
		fill(all(used), false);
		isart.resize(n);
		for (int id : art)isart[id] = true;
		int tmp = n + 1;
		dfs2(0, -1, n, tmp);
		rep(i, n)if (isart[i])trans[i] = i;
	}
	vector<vector<int>> get_graph() {
		return fG;
	}
	vector<int> get_trans() {
		return trans;
	}
	void debug() {
		rep(i, ori.size()) {
			cout << "hai " << i << "\n";
			for (int id : ori[i])cout << id << " ";
			cout << "\n";
		}
		cout << "trans\n";
		rep(i, trans.size())cout << trans[i] << " ";
		cout << "\n";
	}
	vector<vector<int>> get_vs() {
		vector<vector<int>> res;
		rep(i, ori.size()) {
			if (ori[i].size() > 1) {
				res.push_back(ori[i]);
			}
		}
		return res;
	}
};



struct edge {
	int to, col;
};
void solve() {
	int n, m; cin >> n >> m;
	vector<vector<edge>> G(n);
	LowLink lt(n);
	rep(i, m) {
		int a, b, c; cin >> a >> b >> c; a--; b--; c--;
		G[a].push_back({ b,c });
		G[b].push_back({ a,c });
		lt.add_edge(a, b);
	}
	lt.complete(); lt.makegraph_vertice(n + 2 * m);
	vector<vector<int>> vs = lt.get_vs();
	vector<int> trans(n,-1);
	bool exi = false;
	for (auto &v : vs) {
		vector<vector<edge>> g(v.size());
		rep(i, v.size())trans[v[i]] = i;
		for (int id : v)for (edge e : G[id]) {
			if (trans[e.to] >= 0) {
				int le = trans[id];
				int ri = trans[e.to];
				g[le].push_back({ ri,e.col });
				g[ri].push_back({ le,e.col });
			}
		}
		rep(_, 50) {
			rep(i, v.size()) {
				for (int j = 1; j < g[i].size(); j++) {
					uniform_int_distribution<> ud(0, j);
					int to = ud(mt);
					swap(g[i][to], g[i][j]);
				}
			}
			using ar = array<int, 3>;
			vector<int> dep(v.size());
			vector<ar> cnt(v.size());
			vector<bool> used(v.size());
			function<void(int)> dfs = [&](int id) {
				used[id] = true;
				for (edge e : g[id]) {
					if (used[e.to]) {
						if (dep[e.to] < dep[id]) {
							ar c = cnt[id];
							rep(i, 3)c[i] -= cnt[e.to][i];
							c[e.col]++;
							bool valid = true;
							rep(i, 3)if (c[i] == 0)valid = false;
							if (valid)exi = true;
						}
					}
					else {
						dep[e.to] = dep[id] + 1;
						cnt[e.to] = cnt[id];
						cnt[e.to][e.col]++;
						dfs(e.to);
					}
				}
			};
			dfs(0);
		}
		rep(i, v.size())trans[v[i]] = -1;
	}
	if (exi) {
		cout << "Yes\n";
	}
	else {
		cout << "No\n";
	}
}



signed main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    //cout << fixed<<setprecision(10);
    //init_f();
    //init();
    //init2();
    //while(true)
    //expr();
    int t; cin >> t; rep(i, t)
    solve();
    return 0;
}