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

Example Input: It would be wonderful to have so with higher credentials perform tests. There have been small scale tests performed. There are no retail investors to exploit the potential profits.

Steve is a conservationist, so many of the projects they hope this will support have an environmental focus.

For the salinity concern collection volumes are focused on surplus flow like storm run off. Most of the collection points were designed to be portable to minimize impacts on fishing industry and migratory species.

You can learn more at RiverRecycler.com
Example Output: No

Example Input: Check out bikeindex.org - where the cycling community is taking this sort of protection into their own hands. It has a pretty good success rate so far by letting people register their bikes for free, and then giving stolen bike data to shops, riders, police, etc.
Example Output: No

Example Input: Maybe we shouldn't have spent the money on these fancy laser detectors and just used some flashlights in toilet paper rolls instead, and then waited for this collision of supermassive black holes a million years from now:
http://www.nytimes.com/2015/01/08/science/in-a-far-off-galaxy-2-black-holes-dance-toward-an-explosive-union.html?_r=2

The black holes involved in the current study were actually pretty small (61 suns combined) compared to the supermassive black holes at the centers of galaxies that may have masses up to billions of suns.
Example Output:
No