#include <bits/stdc++.h>
using namespace std;
int n, m, k, t;
int kstill = 0;
int t1, t2,t3;
string crops[3] = {"Carrots","kiwis","Grapes"};
int idl(int t1h,int t2h)
{
    int ret;
    ret = ((t1h)*m)+t2h;
    return ret;
}
bool valid(int id,int value,vector<int> &gap){
    return gap[value]<= id;
}
int waste(int id,vector<int> &gap )
{
    int minx = 0,maxx = gap.size()-1,mid,ans;
    while(minx<=maxx){
        mid = (minx+maxx)/2;
        if(valid(id,mid,gap)){
            maxx = mid-1;
        }else{
            minx = mid+1;
            ans = mid;
        }
    }
    cout<<ans<<endl;
    return ans;
}
int main()
{
    vector<int> gap;
    cin>>n>>m>>k>>t;
    gap[0] = 0;
    for(int i = 0 ; i<k ; i++)
    {
        cin>>t1>>t2;
        kstill += 1;
        gap[kstill] = idl(t1,t2);
    }
    for(int i = 0 ; i<t ; i++)
    {
        cin>>t1>>t2;
        int id = idl(t1,t2);
        int w = waste(id,gap);
        if(w==-1){
            cout<<"Waste\n";
        }else{
            id -=w;
            cout<<crops[id%3]<<"\n";
        }

    }
}