#include <bits/stdc++.h>
using namespace std;
#define FOR(i,m,n) for(int i=(m);i<(n);++i)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) (v).begin(),(v).end()
using ll = long long;
constexpr int INF = 0x3f3f3f3f;
constexpr long long LINF = 0x3f3f3f3f3f3f3f3fLL;
constexpr double EPS = 1e-8;
constexpr int MOD = 998244353;
// constexpr int MOD = 1000000007;
constexpr int DY4[]{1, 0, -1, 0}, DX4[]{0, -1, 0, 1};
constexpr int DY8[]{1, 1, 0, -1, -1, -1, 0, 1};
constexpr int DX8[]{0, -1, -1, -1, 0, 1, 1, 1};
template <typename T, typename U>
inline bool chmax(T& a, U b) { return a < b ? (a = b, true) : false; }
template <typename T, typename U>
inline bool chmin(T& a, U b) { return a > b ? (a = b, true) : false; }
struct IOSetup {
  IOSetup() {
    std::cin.tie(nullptr);
    std::ios_base::sync_with_stdio(false);
    std::cout << fixed << setprecision(20);
  }
} iosetup;

int main() {
  int n; cin >> n;
  vector<int> l(n, 0);
  vector<vector<int>> graph(n);
  FOR(i, 1, n) {
    int a; cin >> l[i] >> a; --a;
    graph[a].emplace_back(i);
  };
  vector<int> level(n, INF);
  level[0] = 0;
  queue<int> que({0});
  while (!que.empty()) {
    const int skill = que.front(); que.pop();
    for (const int e : graph[skill]) {
      level[e] = max(l[e], level[skill]);
      que.emplace(e);
    }
  }
  vector<int> can_rem;
  REP(i, n) {
    if (level[i] != INF) can_rem.emplace_back(level[i]);
  }
  int q; cin >> q;
  while (q--) {
    int type; cin >> type;
    if (type == 1) {
      int x; cin >> x;
      cout << distance(can_rem.begin(), ranges::upper_bound(can_rem, x)) << '\n';
    } else if (type == 2) {
      int y; cin >> y; --y;
      cout << (level[y] == INF ? -1 : level[y]) << '\n';
    }
  }
  return 0;
}