Or, asin.
Interrogative pronoun signifying who or whom, speaking of God, angels and rational creatures; though in conversation it is sometimes used for inanimate things: ¿ ⊗ ti Dios? who is God? ¿asin daguitóy? who are these?
When speaking relatively of an event and the listener did not catch the subject well, he asks: ⊗? as one saying: who was that?