import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.StreamTokenizer;
import java.util.Scanner;

/*
* 字符串哈希 - 哈希表
* 快速比较两个字符串是否相同
/
public class Main {

public static StreamTokenizer st = new StreamTokenizer(new BufferedReader(new InputStreamReader(System.in)));
public static Scanner scanner = new Scanner(System.in);

public static long P = 131; // 或者13331
public static long[] arr; // 读入字符串数组
public static long[] prr; // P数组

public static void main(String[] args) throws IOException {
    int n = scanner.nextInt();
    int m = scanner.nextInt();
    String next = scanner.next();
    char[] chars = new char[next.length() + 10];
    arr = new long[next.length() + 10];
    prr = new long[next.length() + 10];
    prr[0] = 1;
    for (int i = 1; i <= n; i++) {
        chars[i] = next.charAt(i - 1);
    }
    for (int i = 1; i <= n; i++) {
        prr[i] = prr[i - 1] * P;
        arr[i] = arr[i - 1] * P + chars[i];
    }
    StringBuilder ans = new StringBuilder();
    for (int i = 0; i < m; i++) {
        int l1 = scanner.nextInt();
        int r1 = scanner.nextInt();
        int l2 = scanner.nextInt();
        int r2 = scanner.nextInt();
        if (fun(l1, r1) == fun(l2, r2)) {
            ans.append("Yes").append("\n");
        } else {
            ans.append("No").append("\n");
        }
    }
    System.out.print(ans);
}

private static long fun(int l, int r) {
    return arr[r] - arr[l - 1] * prr[r - l + 1];
}

private static String nextString() throws IOException {
    st.nextToken();
    return st.sval;
}

private static long nextLong() throws IOException {
    st.nextToken();
    return (long) st.nval;
}

private static int nextInt() throws IOException {
    st.nextToken();
    return (int) st.nval;
}

}