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: Vets saw a fetus on Mei Xiang's ultrasound today. Paws crossed 4 viable pregnancy #PandaStory National Zoo (@NationalZoo) August 19, 2015 Question: who are they a fan of? Answer: marvel

no