Categorize the comment on the basis of obscenity. If the comment is obscene output Yes, otherwise output No.

[EX Q]: I think google can answer any question that the CES could answer in a .0005 seconds.
[EX A]: No

[EX Q]: Its been a few years since I have seen one of those, do they still print?
[EX A]: No

[EX Q]: Well you don't have to pay for stupid shopping bags in Springfield.
[EX A]:
Yes