Categorize the comment on the basis of obscenity. If the comment is obscene output Yes, otherwise output No.
One example is below.
Q: Will this remove the property from city taxes?
A: No
Rationale: The comment here is just a normal question without any indecent words and categorized as not obscene. Hence, it is a positive example
Q: Here we go again. Left wing mental cases attacking people. And jerks like wavemaker supporting their juvenile antics. These clowns should be shot as an act of self defense next time they throw punches. I would
A:
Yes