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: The development of the respiratory system in the fetus begins at about 4 weeks. Question: The development of the respiratory system in the fetus begins at about?

Output: 4 weeks


Input: Consider Input: Sentence: Gap genes controls the shape of a developing zygote early in its development. Question: What controls the shape of a developing zygote early in its development?

Output: gap genes


Input: Consider Input: Sentence: The cubic crystal system is composed of three many different types of unit cells. Question: The cubic crystal system is composed of how many different types of unit cells?


Output: three