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

Example Input: Adding the number of protons plus the number of neutrons in an atom decides its approximate mass; atomic number is another word for this value.
Example Output: Adding the number of protons plus the number of neutrons in an atom, decides it's approximate mass, what is another word for this value?

Example Input: You call egg-shaped galaxies, which are reddish to yellowish in color because they contain mostly old stars, elliptical galaxies.
Example Output: What do you call egg-shaped galaxies, which are reddish to yellowish in color because they contain mostly old stars?

Example Input: At ocean trench location are oceans the deepest.
Example Output:
At which location are oceans the deepest?