import java.util.*;

public class Main{
    static int N  = 100010, P = 131;
    static long[] h = new long[N];
    static long[] p = new long[N];
    static char[] str;

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

    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt(), m = sc.nextInt();
        String s = " " + sc.next();
        str = s.toCharArray();
        p[0] = 1;
        for(int i = 1; i <= n; i++){
            p[i] = p[i - 1] * P;
            h[i] = h[i - 1] * P + str[i];
        }
        while(m -- > 0){
            int l1 = sc.nextInt(), r1 = sc.nextInt(), l2 = sc.nextInt(), r2 = sc.nextInt();
            if(get(l1, r1) == get(l2, r2)) System.out.println("Yes");
            else System.out.println("No");
        }
    }
}