Aaliyah's "___ You That Somebody?" (3)

I believe the answer is:

are

(Other definitions for are that I've seen before include "Unit of land measure equal to 100 square metres" , "(We/they/you) exist" , "(We/you/they) exist" , "Exist; square measure" , "Era (anag.)" .)

I've seen this clue in The New York Times.

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