Given a fact, create a question that can be answered using the fact. Construct the question such that it is unambiguous, has a unique answer and the answer can be given using the fact.

Fact: each season occurs once per year
In a decade spring occurs?

Fact: as the use of a crop increases , the amount of crops planted will increase
When the demand for corn rises?

Fact: pushing an object requires force

A baby wants to move a ball, so it looks at the ball and it refuses to move. The baby takes its hand and touches the ball and?