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.

Example Input: The man unlaced his shoes.
The shoes loosened.
Example Output: effect

Example Input: I knocked on my neighbor's door.
My neighbor invited me in.
Example Output: effect

Example Input: The woman tripped on the sidewalk.
There was a crack in the cement.
Example Output:
cause