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: Consider Input: Context: HMS Lancaster, known as the 'Queen's Frigate', sent a message of congratulations to @KensingtonRoyal on the new birth Royal Navy (@RoyalNavy) May 2, 2015 Question: what is the hms lancaster known as? Answer: the queen's frigate

Output: yes


Input: Consider Input: Context: Pres Obama recited poem on Bradlee by Sen Moynihan: “O rare Ben Bradlee/His reign has ceased/But his nation stands/Its strength increased.”— Mark Knoller (@markknoller) October 22, 2014 Question: who is a total loser? Answer: karl rove

Output: no


Input: Consider Input: Context: So sorry to hear about this. It was lovely working with Kenny. Kenny Baker, Star Wars R2-D2 actor, dies aged 81 Ewan McGregor (@mcgregor_ewan) August 13, 2016 Question: what should we stay tuned for? Answer: the nairobians


Output: no