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

40 m/s north of the following represents the velocity of a moving object.
Which of the following represents the velocity of a moving object?

Trichomoniasis is cause by a protozoa.
Trichomoniasis is cause by what type of pathogen?

Four types of tissue are found in animals.
How many types of tissue are found in animals?