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: Comparar al candidato Trump con él Cdte Chávez es expresión de la arrogancia racista e irracionalidad dun partido q no atiende sus electores— Delcy Rodríguez (@DrodriguezVen) October 19, 2016 Question: who does it not serve? Answer: the voters
Example Output: yes

Example Input: Context: @Colt3FIVE thanks for the sweet video.... looking forward to meeting you :)— Alexandra Raisman (@Aly_Raisman) August 21, 2016 Question: what is the person looking forward to? Answer: meeting colt3five
Example Output: yes

Example Input: Context: 6.5 million people die each year from diseases related to #AirPollution. That's the 🌎's largest single environmental risk to health #COP22 WHO (@WHO) November 13, 2016 Question: what's the worlds largest risk to health? Answer: air pollution
Example Output:
yes