Unknowns can be in subgoals.Logical formLearned from2 sentences. Unknowns may be instantiated.Logical formLearned from2 sentences. Knowledge can be about an unknown.Logical formLearned from2 sentences. Cases can be constituted-of-or-filled-with (whereabouts unknown).Logical formLearned from2 sentences. A magic may pertain-to an unknown.Logical formLearned from2 sentences. An unknown may walk in a garden.Logical formLearned from2 sentences. Unknown may see a maid.Logical formLearned from2 sentences. Conferences can be on unknowns.Logical formLearned from2 sentences. A relationship can be to an unknown.Logical formLearned from2 sentences. An (exhibition series) may examine a relationship to an unknown.Logical formLearned from2 sentences. Activities may foster interest to an unknown.Logical formLearned from2 sentences. Unknowns may raise questions.Logical formLearned from2 sentences. A nation can be fearful of an unknown.Logical formLearned from2 sentences. An unknown can be a degree.Logical formLearned from2 sentences. Response can be to an unknown.Logical formLearned from2 sentences.