In this task, you are given a context tweet, a question and corresponding answer of given question. Your task is to classify given passage into two categories: (1) "yes" if the given context is useful in answering the question, and (2) "no" if the given context is not useful.

Context: Senator Bob Corker "begged" me to endorse him for re-election in Tennessee. I said "NO" and he dropped out (said he could not win without...— Donald J. Trump (@realDonaldTrump) October 8, 2017 Question: what chat was this author partaking in? Answer: #cnnafrica
no

Context: You don't have to search hard to figure out why #GoogleGlass is being retooled: Adweek (@Adweek) January 16, 2015 Question: how long was he friends with kesha? Answer: for many years.
no

Context: the world is on fire and #nobama is making stupid buzzfeed selfie stick videos and not corralling llamas #tcot— Asawin Suebsaeng (@swin24) February 26, 2015 Question: what is @alan_arnette thanking people for joining? Answer: alzheimer's prevention registry

no