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: 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?
[EX A]: cellulose

[EX Q]: Sentence: Acids are molecular compounds that dissolve in water to produce hydronium ions and an anion else. Question: Acids are molecular compounds that dissolve in water to produce hydronium ions and what else?
[EX A]: an anion

[EX Q]: Sentence: Metabolic enzymes catalyze catabolic reactions that break down carbohydrates. Question: Metabolic enzymes catalyze catabolic reactions that break down what?
[EX A]:
carbohydrates