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: A(n) well is a hole that is dug or drilled through the ground down to an aquifer. Question: What is hole that is dug or drilled through the ground down to an aquifer?

Answer: well


Question: Sentence: Individuals do populations gain through births and immigration. Question: What do populations gain through births and immigration?

Answer: individuals


Question: Sentence: The quarks in a particle are confined, meaning individual quarks cannot be directly observed. Question: The quarks in a particle are confined, meaning individual quarks cannot be what?

Answer:
directly observed