what does it refer to
Sé a qué se refiere.
I know what you mean.
Ya veo a qué se refiere.
I see what you mean.
Ya sé a qué se refiere.
A qué se refiere?
What does it refer to?
— Juno (2007)
No sé a qué se refiere.
I don't know what he's referring to.
— Impacto (1981)