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: A4: Investors want to see a prototype, build something before you ask for money. #CNNAfrica— Erik Hersman (@whiteafrican) January 14, 2015 Question: what do investors want to see Answer: prototype

yes