#include <bits/stdc++.h>
using namespace std;
#define int long long
#define endl '\n'
const int N=100010,P=131;
typedef unsigned long long ULL;
int n,m;
char str[N];
ULL h[N],p[N];

ULL get(int l,int r)
{
    return h[r]-h[l-1]*p[r-l+1];
}

signed main()
{

    cin>>n>>m;
    scanf("%s",str+1);
    p[0]=1;
    for(int i=1;i<=n;i++)
    {
        h[i]=h[i-1]*P+str[i];
        p[i]=p[i-1]*P;
    }
    while(m--)
    {
        int l1,r1,l2,r2;
        cin>>l1>>r1>>l2>>r2;
        if(get(l1,r1)==get(l2,r2))
            cout<<"Yes"<<endl;
        else
            cout<<"No"<<endl;
    }
    return 0;
}