More pollutants mean poorer air quality.
Use information from the paragraph to answer the question.

Paragraph :

{{context}}

Question:


When a river gets full of a lot of waste chemicals it becomes cleaner or dirtier?
<|tasktype|>
multiple-choice question answering
<|context|>
More pollutants mean poorer air quality.
<|task|>

Use information from the paragraph to answer the question.

Paragraph :

{{context}}

Question:


When a river gets full of a lot of waste chemicals it becomes cleaner or dirtier?
<|pipe|>
dirtier