A lure may pertain-to an unknown.Logical formLearned from14 sentences. A country can be an unknown.Logical formLearned from14 sentences. A person may go into an unknown.Logical formLearned from14 sentences. An effect may pertain-to an unknown.Logical formLearned from14 sentences. An unknown may be knowned.Logical formLearned from13 sentences. An unknown can be black.Logical formLearned from13 sentences. Persons may have an unknown.Logical formLearned from13 sentences. A person may make a pick of an unknown.Logical formLearned from13 sentences. A jump can be into an unknown.Logical formLearned from13 sentences. An unknown may scare a person.Logical formLearned from13 sentences. A search can be for an unknown.Logical formLearned from13 sentences. A list can be constituted-of-or-filled-with unknowns.Logical formLearned from13 sentences. Others may fly into an unknown.Logical formLearned from13 sentences. An unknown can be lanky.Logical formLearned from13 sentences. Mission can be to an unknown.Logical formLearned from13 sentences.