In this task your given two statements. You must judge whether the second sentence is the cause or effect of the first one. Label the instances as "cause" or "effect" based on your judgment. The sentences are separated by a newline character.

[Q]: I left work early.
I had a headache.
[A]: cause


[Q]: The man fell unconscious.
The assailant struck the man in the head.
[A]: cause


[Q]: I came upon a puddle on the sidewalk.
I leapt over the puddle.
[A]:
effect