Equations may have some unknowns.Logical formLearned from2 sentences. A film may feature unknowns.Logical formLearned from2 sentences. An unknown may play a female.Logical formLearned from2 sentences. An unknown can be constituted-of-or-filled-with contention.Logical formLearned from2 sentences. An image may pertain-to an unknown.Logical formLearned from2 sentences. Diseases may pertain-to unknown.Logical formLearned from2 sentences. Challengers of an unknown may die.Logical formLearned from2 sentences. Challengers of an unknown can be a group of fictional characters.Logical formLearned from2 sentences. A (name unknown) can be married.Logical formLearned from2 sentences. Unknown may be created.Logical formLearned from2 sentences. A film can be toward an unknown.Logical formLearned from2 sentences. A signal can be from an unknown.Logical formLearned from2 sentences. A relative velocity of stars can be an unknown.Logical formLearned from2 sentences. An unknown can be in a field.Logical formLearned from2 sentences. Expressions may involve unknowns.Logical formLearned from2 sentences.