#include <bits/stdc++.h>
using namespace std;
inline void solve()
{
string s;
cin>>s;
int n=s.size();
int pre[n+1][26]={};
for (int i=0;i<n;i++)
{
for (int j=0;j<26;j++)
pre[i+1][j]=pre[i][j];
pre[i+1][s[i]-'a']++;
}
int q;
cin>>q;
string ans="DNAE";
while (q--)
{
int a,b,c,d;
cin>>a>>b>>c>>d;
bool w=0;
for (int i=0;i<26;i++)
{
if (pre[b][i]-pre[a-1][i]==pre[d][i]-pre[c-1][i])
continue;
w=1;
}
for (int j=w;j<4;j+=2)
cout<<ans[j];
cout<<endl;
}
}
int main()
{
ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
int t=1;
for (int i=1;i<=t;i++)
{
solve();
}
}
