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: Combustion reaction occurs when a substance reacts quickly with oxygen. Question: What occurs when a substance reacts quickly with oxygen?
[A]: combustion reaction


[Q]: Sentence: We consider ceres to be a dwarf planet. Question: What kind of planet do we consider ceres to be?
[A]: dwarf planet


[Q]: Sentence: Diffraction is the phenomenon in which light and sound waves become circular at the point source of a barrier. Question: What is the phenomenon in which light and sound waves become circular at the point source of a barrier?
[A]:
diffraction