N = int(input())
D = []
for _ in range(N):
	A, B = map(int, input().split())
	D.append([A, B])
M = int(input())
A = [0 for _ in range(M)]
for i in range(M):
	X, Y = map(int, input().split())
	for L in D:
		if X <= L[0] and Y >= L[1]:
			A[i] += 1
if max(A) == 0:
	print(0)
else:
	for i in range(M):
		if A[i] == max(A):
			print(i+1)