import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		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[] sum = new int[m];
		for(int i = 0 ; i < m ; i++) {
			int cnt = 0;
			for(int j = 0 ; j < n ; j++) {
				if(a[j] >= x[i] && b[j] <= y[i]) cnt++;
			}
			sum[i] = cnt;
		}
		int max = -1;
		for(int i = 0 ; i < m ; i++) {
			max = Math.max(max, sum[i]);
		}
		if(max == 0) {
			System.out.println(0);
			return;
		}
		for(int i = 0 ; i < m ; i++) {
			if(sum[i] == max) {
				System.out.println(i + 1);
			}
		}
	}

}