An attitude can be harmful.Logical formLearned from7 sentences. A belief can be harmful.Logical formLearned from7 sentences. Lead can be harmful to children.Logical formLearned from7 sentences. (Gamma rays) can be harmful.Logical formLearned from7 sentences. Environmental hazards can be harmful to health.Logical formLearned from7 sentences. Cigars can be harmful.Logical formLearned from7 sentences. Effluents can be harmful.Logical formLearned from7 sentences. Operations can be harmful.Logical formLearned from7 sentences. Levels can be harmful.Logical formLearned from7 sentences. A conduct can be harmful.Logical formLearned from7 sentences. (Chemical agents) can be harmful.Logical formLearned from7 sentences. Vapours can be harmful.Logical formLearned from7 sentences. Chemicals can be harmful to children.Logical formLearned from7 sentences. Measures can be harmful.Logical formLearned from7 sentences. Information can be harmful to a government.Logical formLearned from7 sentences.