instruction:
Given a statement, generate a question such that the answer is contained in that statement.
question:
Algae play significant roles as producers in water areas.
answer:
Algae play significant roles as producers in what area?


question:
the basic functional unit of the organism transmit nerve impulses to other cells
answer:
What transmits nerve impulses to other cells?


question:
a crane uses pulleys
answer:

What does a crane use?