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

Input: Consider Input: Some viruses carry a few viral enzyme molecules within their capsids.

Output: Some viruses carry a few viral enzyme molecules within their what?


Input: Consider Input: Photoautotrophs and chemoautotrophs are two basic types of autotrophs.

Output: Photoautotrophs and chemoautotrophs are two basic types of what?


Input: Consider Input: Compound machines type of machines generally have lower efficiency but greater mechanical advantage.


Output: What type of machines generally have lower efficiency but greater mechanical advantage?