(Carbon gases) can be harmful.Logical formLearned from2 sentences. Cigarettes can be harmful to populations.Logical formLearned from2 sentences. A revolution can be harmful.Logical formLearned from2 sentences. Stuff can be harmful in concentrations.Logical formLearned from2 sentences. An accord can be harmful to the economy.Logical formLearned from2 sentences. A disclosure of photos can be harmful to a female.Logical formLearned from2 sentences. Exercises can be harmful.Logical formLearned from2 sentences. A move can be harmful for a rehabilitation.Logical formLearned from2 sentences. A flammable liquid can be harmful.Logical formLearned from2 sentences. A return to a way can be harmful to families.Logical formLearned from2 sentences. An act can be harmful.Logical formLearned from2 sentences. Actions can be harmful to peace.Logical formLearned from2 sentences. Ways can be harmful to investors.Logical formLearned from2 sentences. Errors may be considered harmful.Logical formLearned from2 sentences. Drilling can be harmful to an area.Logical formLearned from2 sentences.