"The person of lost umbrella" or "The person whose umbrella is lost"? I wrote the first one in my test, but I don't know if it is right or not.

It was a mini dialogue, and there was a woman who has lost her umbrella, so it was asking me for the speaker (the woman), so I wrote "The person of lost umbrella".

Should it be "The person of lost umbrella" or "The person whose umbrella is lost"? I wrote the first one in my test, but I don't know if it is right or not.

"The person of lost umbrella" or "The person whose umbrella is lost" , I wrote the first one in my test idk if it is right or not :/

"The person of lost umbrella" or "The person whose umbrella is lost"? I wrote the first one in my test, but I don't know if it is right or not.