#include <bits/stdc++.h>
#define int long long
#define ld long double
#define pii pair <int , int>
#define fi first
#define se second
#define arr3 array <int , 3>
#define coutld(x , k) cout << fixed << setprecision(k) << x
using namespace std;
const int maxn = 1e6 + 5;
const int INF = 2e9;
const int mod = 1e9 + 7;
int n , m , q;
bool check[maxn];
vector <int> lpos[maxn];
void solve()
{
cin >> n >> m >> q;
vector <int> cur;
for(int i = 1; i <= m; i++)
{
int l , r; cin >> l >> r;
lpos[r].push_back(l);
}
for(int i = 1; i <= n; i++)
{
cur.push_back(i);
for(int x: lpos[i])
{
while(!cur.empty() && cur.back() >= x) cur.pop_back();
}
if(cur.size() == 0) check[i] = 1;
}
for(int i = 1; i <= q; i++)
{
int x , y; cin >> x >> y;
if(check[y]) cout << "YES" << '\n';
else cout << "NO" << '\n';
}
}
signed main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL); cout.tie(NULL);
solve();
return 0;
}
