instruction:
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.
question:
Sentence: There are four classes of biochemical compounds. Question: How many classes of biochemical compounds are there?
answer:
four


question:
Sentence: Hydrogen gas is generated by the reaction of nitric acid and elemental iron else. Question: Hydrogen gas is generated by the reaction of nitric acid and what else?
answer:
elemental iron


question:
Sentence: Outside the nucleus are electrons located in relation to the nucleus. Question: Where are electrons located in relation to the nucleus?
answer:

outside the nucleus