In this task, you are given a sentence and a question, you would be asked to create the answer which is contained in the sentence provided.

Input: Consider Input: Sentence: There are four classes of biochemical compounds. Question: How many classes of biochemical compounds are there?

Output: four


Input: Consider Input: Sentence: Different media affect the speed of light. Question: Different media affect what property of light?

Output: speed


Input: Consider Input: Sentence: Carbon-oxygen bond type of double bond has a sigma bond and a pi bond. Question: Which type of double bond has a sigma bond and a pi bond?


Output: carbon-oxygen bond