Physical interactions can be harmful.Logical formLearned from2 sentences. Materials can be harmful to a public.Logical formLearned from2 sentences. Impact can be harmful.Logical formLearned from2 sentences. Particles of some microns can be harmful.Logical formLearned from2 sentences. A support can be harmful.Logical formLearned from2 sentences. Breaches can be harmful.Logical formLearned from2 sentences. Use of illicit drugs can be harmful.Logical formLearned from2 sentences. Others can be harmful to (national interests).Logical formLearned from2 sentences. Ideas can be harmful.Logical formLearned from2 sentences. (Contact incidents) can be harmful.Logical formLearned from2 sentences. A trading of (air pollutants) can be harmful.Logical formLearned from2 sentences. (Protein fragments) can be harmful.Logical formLearned from2 sentences. (Radiation exposure) can be harmful.Logical formLearned from2 sentences. Antimicrobial agents can be harmful.Logical formLearned from2 sentences. Sites can be harmful to (pc users).Logical formLearned from2 sentences.