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: The composition of the atmosphere has changed over the last 200 years primarily due to human activity. Question: Which of the following has changed over the last 200 years primarily due to human activity?
answer:
the composition of the atmosphere

question:
Sentence: Cardiac muscle kind of muscle cells undergo twitch-type contractions with long refractory periods followed by brief relaxation periods, allowing the heart to fill with blood for the next cycle. Question: What kind of muscle cells undergo twitch-type contractions with long refractory periods followed by brief relaxation periods, allowing the heart to fill with blood for the next cycle?
answer:
cardiac muscle

question:
Sentence: Unlike wild animals, domestic species type of species are genetically uniform, making them more vulnerable to die-out from disease. Question: Unlike wild animals, what type of species are genetically uniform, making them more vulnerable to die-out from disease?
answer:
domestic species