A policeman may knock on a door.Logical formLearned from8 sentences. A person may knock a time.Logical formLearned from8 sentences. A person may knock somebody.Logical formLearned from8 sentences. A female may knock on wood.Logical formLearned from8 sentences. A person may knock a guy.Logical formLearned from8 sentences. A person may knock an idea.Logical formLearned from8 sentences. A pulse of light may knock electrons off molecules.Logical formLearned from8 sentences. A male may be knocked to the ground by a crowd.Logical formLearned from8 sentences. A number of nations may knock at doors of a western alliance.Logical formLearned from8 sentences. A female may knock at doors.Logical formLearned from8 sentences. Someone may knock someone.Logical formLearned from8 sentences. A person may knock in a run.Logical formLearned from8 sentences. Photons of starlight may knock electrons.Logical formLearned from8 sentences. Opponents may knock a bank.Logical formLearned from8 sentences. A person may knock a hustle.Logical formLearned from8 sentences.