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

Ex Input:
And how much CO2 is absorbed and converted into life sustaining O2 by a single tree? I don't know that info but certainly planting trees to replace all the ones we cut down would definitely help, and the cost wouldn't be ridiculous.

Ex Output:
Yes


Ex Input:
Everyone wants to get a good private or government sector job, according to his/her desires. With a little effort, you can find out best job as you wish. 
Just visit  at …………http://www.9easy-jobs.com

Ex Output:
No


Ex Input:
Mr. Black, I read about southern white people who would say virtually the same thing as you during the civil rights era.  They would say that Black people in the south were perfectly happy being treated barely better than slaves and who were the civil rights workers to come down there and rile them up with ideas that they were equal with whites and entitled to vote and an education and things like that? So Natives in Canada, (and here in Alaska too???) should just learn to accept their station in society and be happy and not get depressed about it?  Common argument from the dominant group in any society.  The ones who lack compassion anyway.

Ex Output:

Yes