instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
You call a substance that is not an acid or a base neutral.
answer:
What do you call a substance that is not an acid or a base?


question:
Most ferns produce the same type of spores and are therefore called homosporous.
answer:
Most ferns produce the same type of spores and are therefore called what?


question:
Present-day plants that have a complex vascular tissue system are called vasuluar plants.
answer:
Present-day plants that have a complex vascular tissue system are called what kind of plants?