#include<bits/stdc++.h>
using namespace std;
constexpr int M=5e5+5;
vector<int>upd1[M],upd2[M];
vector<pair<int,int>>qry[M];
int n,m,q,l,r,f[M],g[M],stk[M];
bool ans[M];
int read(){
    int x=0;char ch=getchar();
    while (!isdigit(ch)) ch=getchar();
    while (isdigit(ch)) x=x*10+ch-48,ch=getchar();
    return x;
}
void solve(int l,int r){
    if (l>=r) return ;
    int mid=l+r>>1;
    for (int i=mid,tp=0;i>=l;i--){
        f[i]=0x3f3f3f3f;
        for (auto j:upd1[i])
            if (j>mid) f[i]=min(f[i],j);
            else while (tp&&stk[tp]<=j)
                f[i]=min(f[i],f[stk[tp--]]);
        stk[++tp]=i;
    }
    for (int i=mid+1,tp=0;i<=r;i++){
        g[i]=0;
        for (auto j:upd2[i])
            if (j<=mid) g[i]=max(g[i],j);
            else while (tp&&stk[tp]>=j)
                g[i]=min(g[i],g[stk[tp--]]);
        stk[++tp]=i;
    }
    for (int i=l;i<=mid;i++)
        for (auto [j,k]:qry[i])
            if (j>mid)
                ans[k]=f[i]<=j&&g[j]>=i;
    solve(l,mid);solve(mid+1,r);
}
int main(){
    freopen("a.in","r",stdin);
    freopen("a.out","w",stdout);
    n=read()+1;m=read();q=read();
    for (int i=1;i<=m;i++){
        l=read();r=read()+1;
        upd1[l].push_back(r);
        upd2[r].push_back(l);
    }
    for (int i=1;i<=q;i++){
        l=read();r=read()+1;
        qry[l].push_back({r,i});
    }
    solve(1,n);
    for (int i=1;i<=q;i++)
        puts(ans[i]?"YES":"NO");
    return 0;
}