An unknown can be for persons.Logical formLearned from8 sentences. An unknown can be at_home.Logical formLearned from8 sentences. Persons may deal with unknowns.Logical formLearned from8 sentences. An (unknown soldier) may pertain-to a country.Logical formLearned from7 sentences. Unknown can be to a female.Logical formLearned from7 sentences. Unknown can be to persons.Logical formLearned from7 sentences. Contact can be with an unknown.Logical formLearned from7 sentences. An unknown can be in the world.Logical formLearned from7 sentences. A threat may pertain-to an unknown.Logical formLearned from7 sentences. A world may pertain-to an unknown.Logical formLearned from7 sentences. A trio can be constituted-of-or-filled-with unknowns.Logical formLearned from7 sentences. Unknown can be an amount of advances.Logical formLearned from7 sentences. A male can be an unknown.Logical formLearned from7 sentences. Power may pertain-to an unknown.Logical formLearned from7 sentences. A person may walk into an unknown.Logical formLearned from7 sentences.