from heapq import heappop,heappush
from bisect import bisect

N=int(input())
T=[list(map(int,input().split())) for i in range(N-1)]

E=[[] for i in range(N)]

for i in range(N-1):
    l,a=T[i]
    a-=1

    E[a].append((i+1,l))

LEVEL=[1<<60]*N
LEVEL[0]=0

Q=[(0,0)]

while Q:
    x,level=heappop(Q)

    for to,lev in E[x]:
        if LEVEL[to]>max(level,lev):
            LEVEL[to]=max(level,lev)
            heappush(Q,(to,LEVEL[to]))
            
SL=sorted(LEVEL)


for i in range(N):
    if LEVEL[i]==1<<60:
        LEVEL[i]=-1


Q=int(input())

for tests in range(Q):
    com,x=map(int,input().split())

    if com==1:
        print(bisect(SL,x))
    else:
        print(LEVEL[x-1])