n = int(input())
nl = [list(map(int, input().split())) for _ in range(n)]

m = int(input())
ml = [list(map(int, input().split())) for _ in range(m)]

l = [0] * (m+1)
for i, (x, y) in enumerate(ml, 1):
    for a, b in nl:
        if x <= a and y >= b:
            l[i] += 1

z = max(l)
if z == 0:
  print(z)
else:
  for i in range(len(l)):
    if l[i] == z:
      print(i)