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.

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?
elemental iron

Sentence: Electron dot diagrams kind of diagrams can be used to illustrate electron movements and ion formation. Question: What kind of diagrams can be used to illustrate electron movements and ion formation?
electron dot diagrams

Sentence: When waves of two different frequencies interfere, beating occurs. Question: When waves of two different frequencies interfere, what phenomenon occurs?

beating