Question: I went to bed. What is the cause?

Answer: It was late.

Question: The skydiver glided safely to the ground. What is the cause?

Answer: She opened her parachute.

Question: The chef pressed down on the dough. What is the effect?

Answer: The dough flattened.

Question: The man got a discount on his groceries. What is the cause?

Answer:
He used a coupon.