#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(i, n) for(ll i = 0, i##_len = (n); i < i##_len; i++)
#define reps(i, s, n) for(ll i = (s), i##_len = (n); i < i##_len; i++)
#define rrep(i, n) for(ll i = (n) - 1; i >= 0; i--)
#define rreps(i, e, n) for(ll i = (n) - 1; i >= (e); i--)
#define all(x) (x).begin(), (x).end()
#define sz(x) ((ll)(x).size())
#define len(x) ((ll)(x).length())

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    // ifstream in("input.txt");
    // cin.rdbuf(in.rdbuf());
    ll n;
    cin >> n;
    vector<pair<ll, ll>> ab(n);
    rep(i, n) cin >> ab[i].first >> ab[i].second;
    ll m;
    cin >> m;
    vector<ll> cnt(m, 0);
    ll mv = 0;
    rep(i, m) {
        ll x, y;
        cin >> x >> y;
        rep(j, n) {
            if ((x <= ab[j].first) && (y >= ab[j].second)) {
                cnt[i]++;
                mv = max(mv, cnt[i]);
            }
        }
    }
    if (mv == 0) {
        cout << 0 << endl;
    }
    else {
        rep(i, m) {
            if (cnt[i] == mv) {
                cout << (i + 1) << endl;
            }
        }
    }
    return 0;
}