from collections import defaultdict
N = int(input())
rec = []
for i in range(N):
    a, b = map(int, input().split())
    rec.append((a, b))

M = int(input())
max_ = 0
dic = defaultdict(int)
tmp = []
for i in range(M):
    x, y = map(int, input().split())
    for s in rec:
        if s[0] >= x and s[1] <= y:
            dic[i] += 1
            if dic[i] == max_:
                tmp.append(i)
            if dic[i] > max_:
                max_ = dic[i]
                tmp = [i]

if len(tmp) == 0:
    print(0)
else:
    for i in tmp:
        print(i + 1)