[Q]: The button on my shirt fell off.
What is the effect?

[A]: I sewed the button back on.


[Q]: The friends' dinnertime conversation turned to politics.
What is the effect?

[A]: A debate erupted.


[Q]: I planted the seeds in the soil.
What is the effect?

[A]: The seeds sprouted.


[Q]: The spy discovered the enemy's location.
What is the cause?

[A]:
The spy bugged the enemy's phone.