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.

Q: Sentence: Is the heat of reaction for an endothermic reaction is positive. Question: Is the heat of reaction positive or negative for an endothermic reaction?

A: positive
****
Q: 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?

A: 4 weeks
****
Q: Sentence: Virtually all aquatic organisms depend directly or indirectly on protists for food. Question: Virtually all aquatic organisms depend directly or indirectly on what for food?

A:
protists
****