Barriers can be harmful.Logical formLearned from8 sentences. Confusion can be harmful.Logical formLearned from8 sentences. Synthetic chemicals can be harmful.Logical formLearned from8 sentences. An escalation can be harmful.Logical formLearned from8 sentences. Spores can be harmful.Logical formLearned from8 sentences. Decisions may prove harmful.Logical formLearned from8 sentences. An ash can be harmful.Logical formLearned from8 sentences. Actions can be harmful to a country.Logical formLearned from8 sentences. An (internet content) can be harmful.Logical formLearned from8 sentences. Pollution can be harmful.Logical formLearned from8 sentences. An outbreak can be harmful.Logical formLearned from8 sentences. Diseases can be harmful to humans.Logical formLearned from8 sentences. A delay can be harmful.Logical formLearned from7 sentences. A situation can be harmful.Logical formLearned from7 sentences. Protozoa can be harmful.Logical formLearned from7 sentences.