#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, n, m, k, t;
  cin >> n >> m >> k >> t;
  int P[k][2];
  for (int i = 0; i < k; i++) {
    int x, y;
    cin >> x >> y;
    P[i][0] = x - 1;
    P[i][1] = y - 1;
  }
  for (int i = 0; i < t; i++) {
    int x, y;
    cin >> x >> y;
    x--;
    y--;
    int temp = x * m + y;
    for (int j = 0; j < k; j++) {
      if (P[j][0] == x && P[j][1] == y) {
        temp = -1;
        cout << "Waste" << endl;
        break;
      } else if ((P[j][0] == x && P[j][1] <= y) || (P[j][0] < x))
        temp--;
    }
    if (temp >= 0) {
      if (temp % 3 == 0)
        cout << "Carrots" << endl;
      else if (temp % 3 == 1)
        cout << "Kiwis" << endl;
      else
        cout << "Grapes" << endl;
    }
  }
  return 0;
}
