[Q]: The boy had trouble buttoning his shirt.
What is the effect?

[A]: He asked his mother for help.

[Q]: The man craved a cigarette.
What is the cause?

[A]: He was addicted to nicotine.

[Q]: The competition ended.
What is the effect?

[A]: The teams shook hands.

[Q]: The engine of the airplane was faulty.
What is the effect?

[A]:
The airplane crashed.