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: Happy Birthday Nelson Mandela. You teach us tolerance, forgiveness and simple kindness. #Saint Kim Engelbrecht (@kimengelbrecht) July 18, 2012 Question: whose's birthday is it? Answer: nelson mandela
yes

Context: Call your parents. Pay women equally. Behold the glory. Stay weird, gay kids. The #oscars are more interesting than ever. Damian Holbrook (@damianholbrook) February 23, 2015 Question: how should women be paid? Answer: equally
yes

Context: Raj uses the plane washroom pre-take off. He sees a face in the mirror. "This might be a ghost" he thinks.... #GhostPlane Aziz Ansari (@azizansari) December 8, 2014 Question: which teams are involved in the trade? Answer: wolves and pistons
no