N = int(input()) # members
members = [list(map(int, input().rstrip().split(' '))) for i in range(0, N)]

M = int(input()) # mentaiko

miracle_idx = []
max_val = -1

for idx in range(0, M):
    cnt = 0
    m = list(map(int, input().rstrip().split(' ')))

    for member in members:
        if member[0] >= m[0] and member[1] <= m[1]:
            cnt += 1

            if max_val == cnt:
                miracle_idx.append(idx)

            elif max_val < cnt:
                max_val = cnt
                miracle_idx = [idx]

if len(miracle_idx) == 0:
    print("0")
else:
    for m in miracle_idx:
        print("{}".format(m + 1))