n = int(input())
ab = []
for i in range(n):
	a, b = map(int, input().split())
	ab.append([a, b])
m = int(input())
xy = []
for i in range(m):
	x, y = map(int, input().split())
	xy.append([x,y])
c = [0 for i in range(m)]
for i in range(n):
	for j in range(m):
		if xy[j][0] <= ab[i][0] and xy[j][1] >= ab[i][1]:
			c[j] += 1
#print (c)
mx = max(c)
if mx == 0:
	print (0)
	exit()
for i, j in enumerate(c):
	if mx == j:
		print (i+1)