#include <bits/stdc++.h>
using namespace std;
using lint = long long;
int main() {
  int n;
  cin >> n;
  vector<vector<int>> vec(n);
  vector<int> par(n, -1), lev(n, 0);
  for (int i = 1; i < n; i++) {
    cin >> lev[i] >> par[i];
    par[i]--;
    vec[par[i]].push_back(i);
  }
  vector<int> min_lev(n, (1<<30));
  min_lev[0] = 0;
  queue<int> q;
  q.push(0);
  while (!q.empty()) {
    int p = q.front();
    q.pop();
    for (auto x : vec[p]) {
      min_lev[x] = max(lev[x], min_lev[p]);
      q.push(x);
    }
  }
  vector cop = min_lev;
  sort(cop.begin(), cop.end());
  int Q;
  cin >> Q;
  for (int i = 0; i < Q; i++) {
    int t, x;
    cin >> t >> x;
    if (t == 1) {
      auto itr = upper_bound(cop.begin(), cop.end(), x)-cop.begin();
      cout << itr << endl;
    }
    else if (t == 2) {
    	x--;
      if (min_lev[x] == (1<<30)) cout << -1 << endl;
      else cout << min_lev[x] << endl;

    }
  }

}