Definition: 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.
Input: Context: Destroyed #MSF-supported hospital in Aleppo was well known locally & hit by direct airstrike on Wednesday. Hospitals are #notatarget #Syria— MSF International (@MSF) April 28, 2016 Question: how was the hospital destroyed? Answer: by an airstrike.

yes