import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int t = input.nextInt();
        while(t-->2){
        int a[] = new int[2];
        int b[] = new int[2];
        for (int i = 0; i<=1; i++){
            a[i] = input.nextInt();
            b[i] = input.nextInt();
        }
        for (int i = 0; i<=t-1; i++){
            for (int j = i+1; j<=t; j++){
                int p =0;
                int q=0;
                if(a[i] == a[j]){
                    p++;
                    //System.out.println("")
                }
                if(p==t-1){
                    System.out.println("YES");
                }
                else{
                    System.out.println("NO");
                }
            }
        }
    }
}
}