[Q]: effect?

The engine of the airplane was faulty.

OPTIONS:
- The airplane crashed.
- The pilot made an error.
****
[A]: The airplane crashed.


[Q]: effect?

The vandals threw a rock at the window.

OPTIONS:
- The window cracked.
- The window fogged up.
****
[A]: The window cracked.


[Q]: cause?

The inside of the train went dark.

OPTIONS:
- The train travelled through a tunnel.
- The train ran off the tracks.
****
[A]:
The train travelled through a tunnel.