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.

Example Input: Context: Terribly sad news about the passing of Alan Rickman. A funny and engaging person who put a shy young actor at ease when I was on HP. Oliver Phelps (@OliverPhelps) January 14, 2016 Question: what puts women at risk and ties doctors' hands? Answer: this law does
Example Output: no

Example Input: Context: "Sailboat racing is like a rugby team playing chess in a F1 car" - Laurent Pages, Team Brunel #VOR Volvo Ocean Race (@volvooceanrace) September 16, 2014 Question: what kind of car is the rugby team? Answer: f1
Example Output: yes

Example Input: Context: "For the love of the sport we want to keep trying to push the boundaries" @joanne_eccles #Vaulting #WEG2014 #JEM2014 The FEI (@myfei_home) September 8, 2014 Question: what sport is trying to push the boundaries? Answer: vaulting
Example Output:
yes