In this task, you're given an open-domain question. Your task is to provide an answer to the given question. There is only one unique answer for each question. Your answer should be short, and refer to an entity, date, number, etc. Do not put your answer in the context of a sentence.

What was the point of the skinner box?
perform studies in conditioning and training

When did the lead singer of acdc died?
February 19, 1980

Who is the lead singer for counting crows?

Adam Duritz