#include<bits/stdc++.h>
#define fi first
#define se second
#define int long long
using namespace std;
using db=double;
using ll=int64_t;
using sll=__int128;
using lb=long double;
int32_t main(){
ios::sync_with_stdio(0); cin.tie(0); cout.tie(0); srand(time(0));
int n,m,q; cin>>n>>m>>q; vector<set<int>>a(n+1);
for(int i=1; i<=m; i++){
int l,r; cin>>l>>r; a[l].insert(r);
}
while(q--){
int l,r; cin>>l>>r; int idx=l-1;
for(int i=l; i<=r; i++){
if(a[i].empty() || idx+1<i)continue;
auto it=a[i].upper_bound(r);
if(it==a[i].begin())continue;
idx=max(idx,*prev(it));
}
if(idx==r)cout<<"YES"<<'\n'; else cout<<"NO"<<'\n';
}
}
/*
O what can ail thee, knight-at-arms,
Alone and palely loitering?
The sedge has withered from the lake,
And no birds sing.
O what can ail thee, knight-at-arms,
So haggard and so woe-begone?
The squirrel’s granary is full,
And the harvest’s done.
I see a lily on thy brow,
With anguish moist and fever-dew,
And on thy cheeks a fading rose
Fast withereth too.
*/
