#include <bits/stdc++.h>
#define IOS ios::sync_with_stdio(0), cin.tie(0)
#define int long long
#define endl '\n'
#define lowbit(x) (x)&(-x)
#define pii pair<int,int>
#define all(s) s.begin(), s.end()
#define ls(x) (x<<1)
#define rs(x) (x<<1|1) 
#define here system("pause")
using namespace std;
template <class T> inline void read(T& x) { x = 0; char c = getchar(); bool f = 0; for (; !isdigit(c); c = getchar()) f ^= (c == '-'); for (; isdigit(c); c = getchar()) x = (x << 3) + (x << 1) + (c ^ 48); x = f ? -x : x; }
template <class T> inline void write(T x) { if (x < 0) putchar('-'), x = -x; if (x < 10) putchar(x + 48); else write(x / 10), putchar(x % 10 + 48); }

const int N = 1505;
const int mod = 1e9+7;
const int INF = 1e15+7;
const double eps = 1e-6;
inline int pow(int a, int b, int p){ int res = 1%p; while(b){ if(b&1) res=res*a%p; a=a*a%p, b>>=1;} return res;}
inline int inv(int a, int p){ return pow(a,p-2,p)%p;}
int n, m, q, b[300], p[2000][300], zero[2000], pre[2000][300], ipre[2000][300], pre2[2000][300];
inline void mul(int *a, int *b, int *c){
	for(int i=0;i<=m;i++){
		c[i] = 0;
		for(int j=0;j<=i;j++){
			c[i] = (c[i] + b[j]*a[i-j]) % mod;
		}
	}
}
inline void inv(int *a, int *b){
	assert(a[0]);
	b[0] = inv(a[0], mod);
	for(int i=1;i<=m;i++){
		b[i] = 0;
		for(int j=0;j<i;j++){
			b[i] = (b[i] + a[i-j]*b[j]) % mod;
		}
		b[i] = (b[i] % mod + mod) % mod;
		b[i] = b[i] * b[0] % mod;
	}
}

inline void sol(){
	cin >> n >> m >> q;
	for(int i=m;i>=0;i--){
		cin >> b[i];
	}
	
	for(int i=1;i<=n;i++){
		bool flag = 0;
		for(int j=0;j<=m;j++){
			int x;
			cin >> x;
			x %= mod;
			
			if(x) flag = 1;
			
			if(flag) p[i][j-zero[i]] = x;
			else ++zero[i];
		}
		zero[i] += zero[i-1];
	}
	
	ipre[0][0] = pre[0][0] = 1;
	for(int i=1;i<=n;i++){
		mul(pre[i-1], p[i], pre[i]);
		inv(pre[i], ipre[i]);
		mul(pre[i], b, pre2[i]);
	}
	
	while(q--){
		int l, r;
		cin >> l >> r;
		int ans = 0;
		for(int i=0;i<=m-zero[r]+zero[l-1];i++){
			ans = (ans + pre2[r][i] * ipre[l-1][m-zero[r]+zero[l-1]-i]) % mod;
		}
		cout << ans << endl;
	}
}
signed main(){
	IOS;
	int tc = 1;
	while(tc--){
		sol();
	}
	return 0;
}