#include <set>
#include <map>
#include <list>
#include <queue>
#include <stack>
#include <cmath>
#include <ctime>
#include <cstdio>
#include <vector>
#include <string>
#include <bitset>
#include <cctype>
#include <cstdlib>
#include <cstring>
#include <utility>
#include <numeric>
#include <complex>
#include <sstream>
#include <fstream>
#include <functional>
#include <iomanip>
#include <cassert>
#include <iostream>
#include <iterator>
#include <algorithm>
using namespace std;
typedef long long ll;
const double EPS = 1e-9;
typedef vector<int> vec;
typedef pair<int, int> P;
#define rep(n) REP(i, 0, n)
#define ALL(v) v.begin(), v.end()
#define in(a) cin >> a;
#define out(a) cout << a << endl;
#define REP(i, x, n) for(int i = x; i < n; i++)
#define INF 100000000
int dy[] = { 1,0,-1,0 }, dx[] = { 0,1,0,-1 };



int main() {
	int n, m, mcnt = 0;
	cin >> n;
	int x[1005] = { 0 }, y[1005] = { 0 }, a[1005] = { 0 }, b[1005] = { 0 };
	int menn[1005] = { 0 };
	for (int i = 0; i < n; i++) cin >> a[i] >> b[i];
	cin >> m;
	for (int i = 0; i < m; i++) cin >> x[i] >> y[i];
	for (int i = 0; i < m; i++) {
		int cnt = 0;
		for (int j = 0; j < n; j++) {
			if (x[i] <= a[j] && y[i] >= b[j]) cnt++;
		}
		mcnt = max(mcnt, cnt);
		menn[i] = cnt;
	}
	if (mcnt == 0) { cout << "0" << endl; return 0; }
	for (int i = 0; i < m; i++) {
		//cout << menn[i] << endl;
		if (menn[i] == mcnt) cout << i + 1 << endl;
	}
	return 0;
}