instruction:
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.
question:
The man underwent emergency surgery.
He suffered a heart attack.
answer:
cause


question:
I approached the man.
He looked familiar.
answer:
cause


question:
Steam rose off of the pot of water.
The water boiled.
answer:

cause