```go
package main

import (
	"fmt"
)

func main() {
	var t int
	fmt.Scan(&t)
	for i := 0; i < t; i++ {
		var l, r, d, u int
		fmt.Scan(&l, &r, &d, &u)
		if l == r && r == d && d == u {
			fmt.Println("Yes")
		} else {
			fmt.Println("No")
		}
	}
}
```