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: 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: Microscopes were first developed in the early 1600s by eyeglass makers. Question: Microscopes were first developed in the early 1600s by this trade?
answer:
eyeglass makers


question:
Sentence: When an ionic compound dissociates in water, water molecules surround each ion and separate it from the rest of the solid. Question: When an ionic compound dissociates in water, water molecules surround each ion and separate it from the rest of the what?
answer:

solid