Skin can be harmful.Logical formLearned from2 sentences. Gambling can be harmful.Logical formLearned from2 sentences. Use of tobacco can be harmful.Logical formLearned from2 sentences. (Gasoline vapors) can be harmful.Logical formLearned from2 sentences. A drilling can be harmful.Logical formLearned from2 sentences. A radiant energy can be harmful.Logical formLearned from2 sentences. Exotic species can be harmful.Logical formLearned from2 sentences. Tapes can be harmful.Logical formLearned from2 sentences. A discharge can be harmful.Logical formLearned from2 sentences. A moisture can be harmful.Logical formLearned from2 sentences. A student may be considered harmful.Logical formLearned from2 sentences. A bleach can be harmful.Logical formLearned from2 sentences. A wastewater can be harmful.Logical formLearned from2 sentences. Withdrawal of therapy can be harmful.Logical formLearned from2 sentences. Materials can be harmful to humans.Logical formLearned from2 sentences.