ποια

In a sentence

• Ποια είναι η αγαπημένη σου ταινία;

  Which is your favorite movie?

  In this question, "Ποια" is used as an interrogative pronoun to inquire about a specific subject, translated as "Which" or "What".

• Δεν ήξερα ποια να διαλέξω.

  I didn't know which one to choose.

  Here, "ποια" functions as a relative pronoun, referring to a choice among options and is again translated as "which."

• Η Μαρία συναντήθηκε με μια ποια ήταν φίλη της από παλιά.

  Maria met with someone who used to be her friend from the past.

  In this sentence, "ποια" is utilized as a demonstrative or indefinite pronoun, implying someone or something previously known or not specified, often translated as "who" or "which one."