Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Q: Cancer occurs most often in adults over fifty age.

A: Cancer occurs most often in adults over what age?
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Q: Multiple genes mutations is usually necessary to develop cancer.

A: What is usually necessary to develop cancer?
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Q: Along with other organelles, all eukaryotic cells possess nucleus.

A:
Along with other organelles, all eukaryotic cells possess what structure?
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