#include "bits/stdc++.h"
#define int long long
#define all(v) v.begin() , v.end()
#define sz(a) (int)a.size()
using namespace std;
const int N = 5e5 + 5;
const int INF = 1e18;
int lazy[4*N], mn[4*N], mx[4*N];
void build(int rt,int l,int r){
mn[rt] = mx[rt] = INF;
if(l == r) return;
int mid = (l + r) / 2;
build(rt * 2, l, mid), build(rt * 2 + 1, mid + 1, r);
}
inline void push(int rt,int l,int r){
if(!lazy[rt]) return;
mn[rt] = mx[rt] = lazy[rt];
if(l == r){
lazy[rt] = 0;
return;
}
lazy[rt * 2] = lazy[rt * 2 + 1] = lazy[rt];
lazy[rt] = 0;
}
void upd(int rt,int l,int r,int gl,int gr,int u){
push(rt, l, r);
if(r < gl || l > gr || mx[rt] <= u) return;
if(l >= gl && r <= gr && mn[rt] >= u){
lazy[rt] = u;
push(rt, l, r);
return;
}
int mid = (l + r) / 2;
upd(rt * 2, l, mid, gl, gr, u);
upd(rt * 2 + 1, mid + 1, r, gl, gr, u);
mn[rt] = min(mn[rt * 2], mn[rt * 2 + 1]);
mx[rt] = max(mx[rt * 2], mx[rt * 2 + 1]);
}
int query_min(int rt,int l,int r,int gl,int gr){
push(rt, l, r);
if(r < gl || l > gr) return INF;
if(l >= gl && r <= gr) return mn[rt];
int mid = (l + r) / 2;
return min(query_min(rt * 2, l, mid, gl, gr), query_min(rt * 2 + 1, mid + 1, r, gl, gr));
}
int query_max(int rt,int l,int r,int gl,int gr){
push(rt, l, r);
if(r < gl || l > gr) return -INF;
if(l >= gl && r <= gr) return mx[rt];
int mid = (l + r) / 2;
return max(query_max(rt * 2, l, mid, gl, gr), query_max(rt * 2 + 1, mid + 1, r, gl, gr));
}
void _(){
int n, m, q;
cin >> n >> m >> q;
vector<int> Perde[n+5];
for(int i=1;i<=m;i++){
int l, r;
cin >> l >> r;
Perde[l].push_back(r);
}
vector<array<int,2>> Query[n+5];
vector<int> ans(q+5,0);
for(int i=1;i<=q;i++){
int l, r;
cin >> l >> r;
Query[l].push_back({r, i});
}
build(1, 1, n);
for(int i=n;i>=1;i--){
for(int u : Perde[i]) upd(1,1,n,i,u,u);
for(auto [u, ind] : Query[i]){
int xd = query_max(1, 1, n, i, u);
if(xd > u) ans[ind] = 0;
else ans[ind] = 1;
}
}
for(int i=1;i<=q;i++){
if(ans[i]) cout << "YES\n";
else cout << "NO\n";
}
}
int32_t main(){
cin.tie(0); ios::sync_with_stdio(0);
int tc=1;//cin >> tc;
while(tc--) _();
return 0;
}
