TASK DEFINITION: In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.
PROBLEM: Question: How many forces do objects on earth have acting on them at all times? Answer: two

SOLUTION: Objects on earth have two forces acting on them at all times.

PROBLEM: Question: Carbon dioxide molecules consist of a central carbon atom bonded to how many oxygen atoms? Answer: two

SOLUTION: Carbon dioxide molecules consist of a central carbon atom bonded to two oxygen atoms.

PROBLEM: Question: Most protein antigens require signals from helper t cells (th2) to proceed to make what? Answer: antibody

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