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: 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?
[A]: beta decay


[Q]: Sentence: Single-celled organisms are prokaryotes. Question: What kind of organisms are prokaryotes?
[A]: single-celled


[Q]: Sentence: Photoautotrophs and chemoautotrophs are two basic types of autotrophs. Question: Photoautotrophs and chemoautotrophs are two basic types of what?
[A]:
autotrophs