Secondhand smoke can be harmful.Logical formLearned from33 sentences. A drug can be harmful.Logical formLearned from33 sentences. A disease can be harmful.Logical formLearned from33 sentences. Drugs can be harmful.Logical formLearned from33 sentences. Environmental impacts can be harmful.Logical formLearned from33 sentences. Patterns can be harmful.Logical formLearned from33 sentences. Invaders can be harmful.Logical formLearned from33 sentences. Thoughts can be harmful.Logical formLearned from33 sentences. An ultraviolet can be harmful.Logical formLearned from33 sentences. Situations may be deemed harmful to national security.Logical formLearned from33 sentences. A chemical can be harmful.Logical formLearned from32 sentences. An one can be harmful.Logical formLearned from32 sentences. Intentions can be harmful.Logical formLearned from31 sentences. Bugs can be harmful.Logical formLearned from31 sentences. A vaccine can be harmful.Logical formLearned from31 sentences.