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: Beta decay occurs when an unstable nucleus emits a beta particle and energy. Question: What occurs when an unstable nucleus emits a beta particle and energy?
answer:
beta decay

question:
Sentence: Certain anaerobic parabasalid species exist in the digestive tracts of termites and wood-eating cockroaches, where they contribute an essential step in the digestion of cellulose. Question: Certain anaerobic parabasalid species exist in the digestive tracts of termites and wood-eating cockroaches, where they contribute an essential step in the digestion of this?
answer:
cellulose

question:
Sentence: Lab experiments is most evidence gathered in science. Question: How is most evidence gathered in science?
answer:
lab experiments