instruction:
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.
question:
Sentence: Exchange occurs directly with the external environment in unicellular organisms type of organisms. Question: Exchange occurs directly with the external environment in what type of organisms?
answer:
unicellular organisms

question:
Sentence: During an earthquake, wet soils become like quicksand. Question: During an earthquake, wet soils become like what?
answer:
quicksand

question:
Sentence: Replacement reactions occur when elements switch places in compounds. Question: What occur when elements switch places in compounds?
answer:
replacement reactions