(Mercury levels) can be harmful.Logical formLearned from7 sentences. Magnets can be harmful.Logical formLearned from7 sentences. A substance can be harmful to health.Logical formLearned from7 sentences. A nose can be harmful to a brain.Logical formLearned from7 sentences. A cigarette can be harmful.Logical formLearned from7 sentences. (Reparative therapy) can be harmful.Logical formLearned from7 sentences. Sanctions can be harmful to iraqis.Logical formLearned from7 sentences. A proposal can be harmful.Logical formLearned from7 sentences. (Cell phones) can be harmful.Logical formLearned from7 sentences. (Co2 emissions) can be harmful.Logical formLearned from7 sentences. A strength can be harmful.Logical formLearned from7 sentences. A rise can be harmful to the economy.Logical formLearned from7 sentences. Gases can be harmful.Logical formLearned from7 sentences. A speculation can be harmful.Logical formLearned from7 sentences. Plastic can be harmful.Logical formLearned from7 sentences.