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.
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Question: Sentence: Red-shift refers to a shift toward red in the spectrum from stars. Question: red-shift refers to a shift toward red in the spectrum from what celestial bodies?

Answer: stars


Question: Sentence: High explosives create shock waves that exceed the speed of sound, a phenomenon that goes by supersonic term. Question: High explosives create shock waves that exceed the speed of sound, a phenomenon that goes by what term?

Answer: supersonic


Question: Sentence: An iron nail object is the best conductor of electricity. Question: Which object is the best conductor of electricity?

Answer:
an iron nail