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.

[EX Q]: Sentence: Plants go through seasonal changes after detecting differences in day length. Question: Plants go through seasonal changes after detecting differences in what?
[EX A]: day length

[EX Q]: Sentence: Boron only occurs naturally in compounds with oxygen element. Question: Boron only occurs naturally in compounds with what element?
[EX A]: oxygen

[EX Q]: Sentence: Cations are formed by the loss of one or two electrons from an element. Question: What are formed by the loss of one or two electrons from an element?
[EX A]:
cations