instruction:
Given a statement, generate a question such that the answer is contained in that statement.
question:
pollution contains very small or liquid particles in the air.
answer:
What type of particles are in the air?


question:
Going from place to place with an automobile necessitates navigation.
answer:
What does going from place to place require?


question:
locusts spread illnesses and destroy crops
answer:

Who spread illnesses and destroy crops?