#include <bits/stdc++.h>
using namespace std;
#include <atcoder/all>
using namespace atcoder;
using ll = long long;
using VI = vector<int>;
using VVI = vector<VI>;
using VL = vector<ll>;
using VVL = vector<VL>;
using VD = vector<double>;
using VVD = vector<VD>;
using VS = vector<string>;
using P = pair<ll,ll>;
using VP = vector<P>;
#define rep(i, n) for (ll i = 0; i < ll(n); i++)
#define out(x) cout << x << endl
#define dout(x) cout << fixed << setprecision(10) << x << endl
#define all(a) (a).begin(),(a).end()
#define rall(a) (a).rbegin(),(a).rend()
#define sz(x) (int)(x.size())
#define re0 return 0
#define pcnt __builtin_popcountll
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
constexpr int inf = 1e9;
constexpr ll INF = 1e18;
//using mint = modint1000000007;
//using mint = modint998244353;
int di[4] = {1,0,-1,0};
int dj[4] = {0,1,0,-1};

int main(){
    ll n;
    cin >> n;
    VL a(n),l(n);
    VVL g(n);
    for(int i = 1;i < n;i++){
        cin >> l[i] >> a[i];
        a[i]--;
        g[a[i]].push_back(i);
    }
    VL dp(n,INF);
    VL seen(n);
    dp[0] = 0;
    rep(i,n){
        for(auto j:g[i]){
            if(seen[j] == 0){
                seen[j] = 1;
                dp[j] = l[j];
            }
            chmax(dp[j],dp[i]);
        }
    }
    VL x = dp;
    sort(all(x));
    ll cnt = 0;
    rep(i,n) if(x[i] != INF) cnt++;
    ll q;
    cin >> q;
    rep(qi,q){
        ll t,y;
        cin >> t >> y;
        if(t == 1){
            auto itr = upper_bound(all(x),y);
            ll ans = itr-x.begin();
            chmin(ans,cnt);
            out(ans);
        }
        if(t == 2){
            y--;
            ll ans = dp[y];
            if(ans == INF) ans = -1;
            out(ans);
        }
    }
}