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: Spotted along Obama motorcade route in Denver: Bearded dude holding "Free weed 4 Obama" sign— Steve Holland (@steveholland1) July 9, 2014 Question: who can not confirm this? Answer: lauren graham

no