Question

¿quién es joaquín? incluye el artículo definido.
joaquín
kelly
lolo
joaquín es
i de kelly.

Explanation:

To answer this, we analyze the diagram: the ring between Joaquín and Kelly suggests a marital relationship, and the line from Joaquín to Lolo (a child - like figure or pet? But in family terms, likely a spouse - child or spouse - pet? Wait, the ring is a wedding ring, so Joaquín is Kelly's husband. In Spanish, "el marido" is "the husband". So we need to fill in "el marido".

Answer:

el marido