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: The malleability of materials describes the ease in which they can be molded into thin sheets. Question: What property of materials describes the ease in which they can be molded into thin sheets?
[EX A]: malleability

[EX Q]: Sentence: Carbonic acid can dissociate into hydrogen carbonate ions and protons. Question: Carbonic acid can dissociate into hydrogen carbonate ions and what?
[EX A]: protons

[EX Q]: Sentence: All enzymes have an optimal temperature and ph. Question: All enzymes have an optimal temperature and what?
[EX A]:
ph