#include<iostream>
#include<cmath>
using namespace std;
const int P = 13331;
char s[100010];
unsigned long long h[100010] , p[100010];
unsigned long long get(int l,int r){
    return h[r] - h[l - 1] * p[r - l + 1];
}
int main(){
    int n ,m ;
    cin >> n >> m;
    for(int i = 1; i <= n;i ++) cin >> s[i];
    p[0] = 1;
    for(int i = 1;i <= n; i ++){
        p[i] = p[i - 1] * P;
        h[i] = h[i - 1] * P + s[i];
    }
    int l1,r1,l2,r2;
    while(m --){
        cin >> l1 >> r1 >> l2 >> r2;
        if(get(l1, r1) == get(l2, r2)) cout << "Yes" <<endl;
        else cout << "No" << endl;
    }
    return 0;
}