Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
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Question: Healthy lungs is necessary in a person who wishes to play wind instruments.

Answer: What is necessary in a person who wishes to play wind instruments?

Question: The nuclear envelope is a double-layered plasma membrane like the cell membrane, although without membrane proteins.

Answer: The nuclear envelope is a double-layered plasma membrane like the cell membrane, although without what?

Question: Ores rock contains concentrations of valuable minerals.

Answer:
What type of rock contains concentrations of valuable minerals?