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: Exchange occurs directly with the external environment in unicellular organisms type of organisms. Question: Exchange occurs directly with the external environment in what type of organisms?
Example Output: unicellular organisms

Example Input: Sentence: Stem basic plant structure facilitates dispersal of pollen and fruit by raising reproductive structures. Question: What basic plant structure facilitates dispersal of pollen and fruit by raising reproductive structures?
Example Output: stem

Example Input: Sentence: Amphibians (or tetrapods) were the first with four limbs. Question: Which vertebrates were the first with four limbs?
Example Output:
amphibians (or tetrapods)