import java.io.*;

public class Main{
    static int N = 100010;
    static int P = 131;
    static char[] c = new char[N];
    static long[] p = new long[N];
    static long[] h = new long[N];
    static long get(int l,int r){
        return h[r]-h[l-1]*p[r-l+1];
    }
    public static void main(String[] args) throws Exception{
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String[] s = br.readLine().split(" ");
        int n = Integer.valueOf(s[0]);
        int m = Integer.valueOf(s[1]);
        String str = br.readLine();
        p[0] = 1;
        for(int i=1;i<=n;i++){
            c[i] = str.charAt(i-1);
            p[i] = p[i-1]*P;
            h[i] = h[i-1]*P + c[i];
        }
        while(m-->0){
            String[] strs = br.readLine().split(" ");
            int l1 = Integer.valueOf(strs[0]);int r1 = Integer.valueOf(strs[1]);
            int l2 = Integer.valueOf(strs[2]);int r2 = Integer.valueOf(strs[3]);
            if(get(l1,r1)==get(l2,r2))  System.out.println("Yes");
            else    System.out.println("No"); 
        }
    }
}