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.

Example Input: Sentence: The conclusion that two animal species evolved from a common ancestor in recent geological history is best supported by the observation that the species have similar bone structure. Question: Which of the following observations best supports the conclusion that two animal species evolved from a common ancestor in recent geological history?
Example Output: The species have similar bone structure.

Example Input: Sentence: Natural selection evolutionary process has adapted protonephridia to different tasks in different environments. Question: What evolutionary process has adapted protonephridia to different tasks in different environments?
Example Output: natural selection

Example Input: Sentence: Carbon element is a biochemical compound based on. Question: What element is a biochemical compound based on?
Example Output:
carbon