Tracts can be empty.Logical formLearned from11 sentences. A copy may pertain-to a tract.Logical formLearned from11 sentences. Tracts can be roadless.Logical formLearned from11 sentences. (Tract infections) can be mild.Logical formLearned from11 sentences. Tracts can be constituted-of-or-filled-with text.Logical formLearned from11 sentences. Tracts can be scholarly.Logical formLearned from11 sentences. Tracts can be sensory.Logical formLearned from11 sentences. Tracts can be apocalyptic.Logical formLearned from11 sentences. Viruses may infect a respiratory tract.Logical formLearned from11 sentences. A blockage can be in an urinary tract.Logical formLearned from11 sentences. Cancers may pertain-to a gastrointestinal tract.Logical formLearned from11 sentences. Tracts can be in a US-city.Logical formLearned from11 sentences. Tracts may pertain-to a forest.Logical formLearned from11 sentences. Tracts can be constituted-of-or-filled-with water.Logical formLearned from11 sentences. Tracts may pertain-to a country.Logical formLearned from11 sentences.