var notebook = {
	brand: "HP",
	type:  "440 G4",
	model: "Y7Z75EA",
	ram: 4,
	size: "14",
	weight: 1.8,
	resolution: {
		width: 1920,
		height: 1080,
	},
};

var phone = {
	brand: "meizu",
	model: "m2",
	ram: 2,
	color: "black",
};

var person = {
	name: "Donald",
	surname: "Trump",
	married: true,
}

person.smartphone = phone;
person.laptop = notebook;

person.smartphone.owner = person;
person.laptop.owner = person;

console.log(person.smartphone.owner.laptop.owner.smartphone == person.smartphone) // true