#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int,int>
#define ff first
#define ss second
#define pb push_back
#define vi vector<int>
#define fr(i,ii,iii) for(int i=ii;i<iii;i++)
const int N=202;
int n,m,q;
pii p[N];
int f[N];
int main(){
ios_base::sync_with_stdio(NULL);cin.tie(NULL);
cin>>n>>m>>q;
fr(i,1,m+1)cin>>p[i].ff>>p[i].ss;
fr(i,0,q){
int x,y;cin>>x>>y;
fr(i,1,n+1)f[i]=0;
fr(i,1,m+1){
if(p[i].ff>=x and p[i].ss<=y){
f[p[i].ff]++;
f[p[i].ss+1]--;
}
}
fr(i,1,n+1){
f[i]+=f[i-1];
}
bool ok=1;
fr(i,1,n+1){
if(f[i]==0 and i>=x and i<=y){
ok=0;
break;
}
if(f[i]!=0 and (i<x or i>y)){
ok=0;
break;
}
}
cout<<(ok?"YES":"NO")<<"\n";
}
}
/*
6 2 1
1 2
3 4
1 4
*/
