import sys
input = sys.stdin.readline

N = int(input())
A, B = [0] * N, [0] * N
for i in range(N):
	A[i], B[i] = map(int, input().split())

M = int(input())
X, Y = [0] * M, [0] * M
for i in range(M):
	X[i], Y[i] = map(int, input().split())
 
ma = 1
ans = []
for i in range(M):
    cnt = 0
    for j in range(N):
        if X[i] <= A[j] and Y[i] >= B[j]:
            cnt += 1
    if cnt > ma:
        ans = [i + 1]
        ma = cnt
    elif cnt == ma:
        ans.append(i + 1)
    
if ans:
	for a in ans:
		print(a)
else:
    print(0)