A knife may be involved.Logical formLearned from15 sentences. A knife can be between ribs.Logical formLearned from15 sentences. A quality may pertain-to a knife.Logical formLearned from15 sentences. A knife can be polished.Logical formLearned from15 sentences. A (knife attack) can be on a (security checkpoint).Logical formLearned from15 sentences. A knife can be favourite.Logical formLearned from15 sentences. A male may toss a knife.Logical formLearned from15 sentences. Knives can be in pockets.Logical formLearned from15 sentences. A person may bring a knife.Logical formLearned from15 sentences. Knives can be religious.Logical formLearned from15 sentences. A knife can be said.Logical formLearned from15 sentences. A knife can be through hot butter.Logical formLearned from15 sentences. Knives can be heavy.Logical formLearned from15 sentences. A person may sell knives.Logical formLearned from15 sentences. A knife can be in an eye.Logical formLearned from15 sentences.