TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: Most protein antigens require signals from helper t cells (th2) to proceed to make antibody.

SOLUTION: Most protein antigens require signals from helper t cells (th2) to proceed to make what?

PROBLEM: The discovery of ribozymes nullified the idea that all biological catalysts are proteins.

SOLUTION: What nullified the idea that all biological catalysts are proteins?

PROBLEM: Ocean waves travel(s) at the interface between the sea surface and the atmosphere.

SOLUTION:
What travels at the interface between the sea surface and the atmosphere?