include

include

include

using namespace std; int n,m,k,t; int a,b; struct node {

int x,y;

}e[40005]; bool check(int c,int d) {

for (int i=1; i<=k; i++) 
	if (c==e[i].x && d==e[i].y)
		return true;
return false;

} bool cmp(node n1,node n2) {

if (n1.x != n2.x) return n1.x < n2.x;
return n1.y < n2.y;

} int main() {

scanf("%d%d%d%d",&n,&m,&k,&t);
for (int i=1; i<=k; i++) cin>>e[i].x>>e[i].y;
sort (e+1,e+k+1,cmp);
for (int i=1; i<=t; i++)
{
	cin>>a>>b;
	int cnt=(a-1)*m+b;
	if (check(a,b)) printf("Waste\n");
	else
	{
		for (int j=1; j<=k; j++)
		{
			if (e[j].x<a || e[j].x==a && e[j].y<b) cnt--;
			else break;
		} 
		if (cnt%3==1) printf("Carrots");
		else if (cnt%3==2) printf("Kiwis");
		else if (cnt%3==0) printf("Grapes");
		printf("\n");
	}
}
return 0;

}