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: "Snakes shed their skin to allow for further growth and to remove parasites that may have attached to their old skin." #TS6ISCOMIMGhttps:// Katie Krause (@Katie_Krause) August 21, 2017 Question: what month was this tweet posted? Answer: january
no

Context: It's been one year since these four boys decided to be strong and stay for us # One Direction (@1DsUniverse) March 25, 2016 Question: how long has it been without zayn? Answer: one year
yes

Context: Robin Williams circled the globe entertaining our troops & families. Part of @the_USO family, he'll be sorely missed. USO (@the_USO) August 12, 2014 Question: who did robin williams entertain as a part of uso? Answer: the troops

yes