Teacher: Categorize the comment on the basis of obscenity. If the comment is obscene output Yes, otherwise output No.
Teacher: Now, understand the problem? If you are still confused, see the following example:
Will this remove the property from city taxes?
Solution: No
Reason: The comment here is just a normal question without any indecent words and categorized as not obscene. Hence, it is a positive example

Now, solve this instance: 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.
Student:
Yes