How do you answer de quien es?

The phrase "de quién es" means "whose is it" in Spanish. To answer this question correctly, you need to know what you are referring to.

Here are some examples of how you could answer "de quién es," depending on the context:

If you're talking about a specific object:

* "Es de Juan." (It's Juan's.)

* "Es de mi hermana." (It's my sister's.)

* "Es de la escuela." (It's the school's.)

* "Es mío/mía." (It's mine.)

If you're talking about a person's possession or characteristic:

* "La inteligencia es de su padre." (The intelligence is from his father.)

* "El talento para el arte es de su madre." (The talent for art is from his mother.)

If you're talking about something abstract:

* "La idea es de mi amigo." (The idea is from my friend.)

* "El plan es del gerente." (The plan is from the manager.)

If you don't know who it belongs to:

* "No lo sé." (I don't know.)

* "No tengo idea." (I have no idea.)

To give you the most appropriate answer, please provide more context about what you are referring to.