TASK 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.
PROBLEM: Context: LeBron James is returning to the Cleveland Cavaliers, a source tells uuu. @KingJames #LeBronToClev Chris Sheridan (@sheridanhoops) July 9, 2014 Question: which sources says lebron james is returning to cleveland? Answer: sheridanhoops.com

SOLUTION: yes

PROBLEM: Context: Home sweet home, great weekend in #saumur so many good memories and a brilliant way to start the season :) Joanne Eccles (@joanne_eccles) April 22, 2014 Question: who are closing in on him? Answer: regime forces

SOLUTION: no

PROBLEM: Context: It's a sad day for KS and the nation. This law puts women at risk and ties doctors' hands. We'll continue to fight! Julie Burkhart (@julieburkhart) April 7, 2015 Question: what mythical creature is used to describe pharrell? Answer: vampire

SOLUTION:
no