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: Age causes reduction of elasticity in all organs. Question: What causes reduction of elasticity in all organs?
Example Output: age

Example 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?
Example Output: 4 weeks

Example Input: Sentence: Portal veins carry blood between pairs of capillary beds. Question: Portal veins carry blood between what?
Example Output:
pairs of capillary beds