package yuki183;

import java.util.Scanner;

public class B {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int[] a = new int[n];
		int[] b = new int[n];
		for(int i=0; i<n; i++) {
			a[i] = sc.nextInt();
			b[i] = sc.nextInt();
		}
		int m = sc.nextInt();
		int[] x = new int[m];
		int[] y = new int[m];
		for(int i=0; i<m; i++) {
			x[i] = sc.nextInt();
			y[i] = sc.nextInt();
		}
		int[] cnt = new int[m];
		for(int i=0; i<n; i++) {
			for(int j=0; j<m; j++) {
				if(x[j]<=a[i]&&b[i]<=y[j]) cnt[j]++;
			}
		}
		int max = -1;
		for(int i=0; i<m; i++) {
			max = Math.max(max, cnt[i]);
		}
		if(max==0) {
			System.out.println(0); return;
		}
		for(int i=0; i<m; i++) {
			if(max==cnt[i]) System.out.println(i+1);
		}
	}

}