ab=[list(map(int,input().split())) for i in range(int(input()))]
xy=[list(map(int,input().split()))+[0,i+1] for i in range(int(input()))]
#print(ab)
#print(xy)
for w in ab:
    for v in xy:
        if w[0]>=v[0] and w[1]<=v[1]:
            v[2]+=1
mv=max([v[2] for v in xy])
if mv==0:
    print(0)
    exit()
xy.sort(key=lambda x:x[2],reverse=True)
counter=0
while True:
    if xy[counter][2]==mv:
        print(xy[counter][3])
        counter+=1
    else:
        break