if __name__ == "__main__":
    n = int(input())
    member_list = []
    for i in range(n):
        member_list.append(tuple(map(int, input().split(" "))))
    m = int(input())
    ans_list = []
    for i in range(m):
        x, y = tuple(map(int, input().split(" ")))
        cnt = 0
        for a, b in member_list:
            if x <= a and b <= y:
                cnt += 1
        ans_list.append(cnt)

    if max(ans_list) == 0:
        print(0)
    else:
        ans_num = max(ans_list)
        for i in range(m):
            if ans_list[i] == ans_num:
                print(i + 1)