#include<bits/stdc++.h>
using namespace std;
typedef unsigned long long LL;
const int N=1e6+10;
const int P=1331;
string s;
LL h[N],p[N];
int nn,mm;
LL get_(int l,int r)
{
    return h[r]-h[l-1]*p[r-l+1];
}
int main()
{
    string b="#";
    cin>>nn>>mm;
    cin>>s;
    s=b+s;
    nn=s.size()-1;
    p[0]=1;
    for(int i=1;i<=nn;i++)
    {
        p[i]=p[i-1]*P;
        h[i]=h[i-1]*P+s[i];
    }
    while(mm--)
    {
        int a,b,c,d;
        cin>>a>>b>>c>>d;
        if(get_(a,b)==get_(c,d))cout<<"Yes"<<endl;
        else cout<<"No"<<endl;
    }
    return 0;
}