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: Breathing control is only effective if ventilation is matched to blood flow through alveolar capillaries. Question: What is only effective if ventilation is matched to blood flow through alveolar capillaries?
Example Output: breathing control

Example Input: Sentence: The thick skin, found only on the palms of the hands and the soles of the feet, has an extra layer. Question: The thick skin, found only on the palms of the hands and the soles of the feet, has an extra what?
Example Output: layer

Example Input: Sentence: Weight is the result of the force of gravity being opposed by the normal force. Question: What property is the result of the force of gravity being opposed by the normal force?
Example Output:
weight