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.

Sentence: Solid property are alkali metals at room temperature. Question: What property are alkali metals at room temperature?
solid

Sentence: Energy do ecosystems absorb on the earth. Question: What do ecosystems absorb on the earth?
energy

Sentence: In the freshwater flatworms, protonephridia serve chiefly in osmoregulation. Question: In the freshwater flatworms, protonephridia serve chiefly in what?

osmoregulation