Teacher:In this task, you are given two natural language statements with similar wording. You must choose the statement that makes less sense based on common sense knowledge. A '
' separates the statements. Use "first" or "second" to indicate which sentence makes less sense.
Teacher: Now, understand the problem? Solve this instance: the water in the river has color and smell because it is getting cleaner and cleaner
the water in the river has color and smell because it is getting dirtier and dirtier
Student:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
first