#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const ll N = 1e6 + 1;
struct STN {
ll val, lazy;
};
struct SegmentTree {
STN st[N * 4 + 100];
STN merge(STN a, STN b) {
return {min(a.val, b.val), 0};
}
void down(ll id) {
if (st[id].lazy != 0) {
ll val = st[id].val;
st[id << 1].val = max(st[id << 1].val, val);
st[id << 1 | 1].val = max(st[id << 1 | 1].val, val);
st[id << 1].lazy = max(st[id << 1].lazy, val);
st[id << 1 | 1].lazy = max(st[id << 1 | 1].lazy, val);
st[id].lazy = 0;
}
}
void update(ll id, ll l, ll r, ll u, ll v, ll val) {
if (r < u || l > v) return;
if (u <= l && r <= v) {
st[id].val = max(st[id].val, val);
st[id].lazy = val;
return;
}
down(id);
ll mid = (l + r) >> 1;
update(id << 1, l, mid, u, v, val);
update(id << 1 | 1, mid + 1, r, u, v, val);
st[id] = merge(st[id << 1], st[id << 1 | 1]);
}
void update(ll l, ll r, ll val) {
update(1, 1, 1e6, l, r, val);
}
STN get(ll id, ll l, ll r, ll u, ll v) {
if (r < u || l > v) return {(ll)1e18, 0};
if (u <= l && r <= v) {
// cout << "__ " << id << ' ' << l << ' ' << r << endl;
return st[id];
}
down(id);
ll mid = (l + r) >> 1;
return merge(
get(id << 1, l, mid, u, v),
get(id << 1 | 1, mid + 1, r, u, v)
);
}
STN get(ll l, ll r) {
return get(1, 1, 1e6, l, r);
}
};
ll n, m, q;
ll a[N], finalRes[N];
vector<ll> curts[N];
vector<array<ll, 2>> query[N];
SegmentTree st;
int main() {
ios_base::sync_with_stdio(0), cin.tie(0);
cin >> n >> m >> q;
for (int i = 1; i <= m; i ++) {
ll l, r; cin >> l >> r;
curts[r].push_back(l);
}
for (int i = 1; i <= q; i ++) {
ll l, r; cin >> l >> r;
query[r].push_back({l, i});
}
for (int r = 1; r <= 5e5; r ++) {
for (auto l: curts[r]) {
st.update(l, r, l);
}
for (auto [l, i]: query[r]) {
// cout << "???: " << endl << st.get(l, r).val << endl;
if (st.get(l, r).val >= l) finalRes[i] = 1;
else finalRes[i] = 0;
}
}
for (int i = 1; i <= q; i ++) {
if (finalRes[i] == 1) cout << "YES\n";
else cout << "NO\n";
}
}
