Instructions: In this task you're given two statements in Marathi. You must judge whether the second sentence is the cause or effect of the first one. The sentences are separated by a newline character. Output either the word 'cause' or 'effect' .
Input: ट्रेनच्या आतील भागात अंधार पडला. 
 रेल्वेने बोगद्यातून प्रवास केला.
Output:
cause