In this task, you are given a question and an answer. Answer "Yes" if the given answer correctly answers the question, otherwise answer "No".
Example: what latitude is tropic of cancer, Answer: It currently (Year 2013) lies at 23° 26′ 15.143′′ north of the Equator.
Example solution: Yes
Example explanation: This is a good example, and the given answer correctly answers the question.

Problem: what tensions preceded the berlin blockade, Answer: Their aim was to force the western powers to allow the Soviet zone to start supplying Berlin with food and fuel, thereby giving the Soviets practical control over the entire city.

Solution: Yes