#include <iostream>
#include <string>

using namespace std;
int main ()
{
	int test,i,j,count,check,counter=1;
	string s;
	string critical;
	while(cin>>s&&s!="")
	{
		check=0;
		count=0;
		cin>>test;
		cout<<"Case "<<counter<<":"<<endl;
		for(int l=0; l<(s.size()-1); l++)
			{
				if(s[l]!=s[l+1])
				{
					critical[count]=(l+1);
					count++;
				}
			}
		for(int N=0; N<test; N++)
		{

			cin>>i>>j;
			if(count==1)
			{
			if((i<critical[0])&&(j<critical[0]))
				{
					check=1;

				}
			else if((i>critical[0])&&(j>critical[0]))
				{
					check=1;

				}
			}
			else{
			for(int k=0; k<count-1; k++)
			{
				if((i<critical[k])&&(i<critical[k+1])&&(j<critical[k])&&(j<critical[k+1]))
				{
					check=1;
					break;
				}
			}
			}
			if(check==1)
				cout<<"Yes"<<endl;
			else cout<<"No"<<endl;
		}
		s.clear();
		critical.clear();
		cin.ignore();
		counter++;
	}
}