A system can be harmful.Logical formLearned from4 sentences. Biological substances can be harmful.Logical formLearned from4 sentences. A (bird flu virus) can be harmful to humans.Logical formLearned from4 sentences. Consumption of a type of hormone can be harmful to human health.Logical formLearned from4 sentences. Contraceptives can be harmful.Logical formLearned from4 sentences. Air can be harmful.Logical formLearned from4 sentences. A (market timing) can be harmful.Logical formLearned from4 sentences. Action can be harmful.Logical formLearned from4 sentences. Constraints can be harmful.Logical formLearned from4 sentences. Groups can be harmful.Logical formLearned from4 sentences. A smog can be harmful.Logical formLearned from4 sentences. Inhalations can be harmful.Logical formLearned from4 sentences. A ban can be harmful to ranchers.Logical formLearned from4 sentences. Substances can be harmful for health.Logical formLearned from4 sentences. A list can be harmful.Logical formLearned from3 sentences.