#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(0);
  long long n, m, k, t;
  cin >> n >> m >> k >> t;
  pair<int, int> mp[k + 1];
  long long x, y, a, b;
  for (int i = 0; i < k; i++) {
    cin >> mp[i].first >> mp[i].second;
  }
  sort(mp, mp + k);
  for (int i = 0; i < t; i++) {
    cin >> x >> y;
    long long idx = m * (x - 1) + y;
    bool f = true;
    for (int i = 0; i < k; i++) {
      if (mp[i].first > x || (mp[i].first == x && mp[i].second > y)) {
        idx -= (i + 1);
        break;
      }
      if (mp[i].first == x && mp[i].second == y) {
        f = false;
        cout << "Waste" << endl;
        break;
      }
      if (i == k - 1) idx = idx - k - 1;
    }
    if (idx % 3 == 0 && f)
      cout << "Carrots" << endl;
    else if (idx % 3 == 1 && f)
      cout << "Kiwis" << endl;
    else if (idx % 3 == 2 && f)
      cout << "Grapes" << endl;
  }
}
