An upper respiratory tract may undergo ailments.Logical formLearned from7 sentences. An edge may pertain-to a tract.Logical formLearned from7 sentences. A tract may undergo an opening.Logical formLearned from7 sentences. Cells may line a digestive tract.Logical formLearned from7 sentences. A tract may pertain-to a woman.Logical formLearned from7 sentences. A tract can be constituted-of-or-filled-with grassland.Logical formLearned from7 sentences. Carcinoma may pertain-to a respiratory tract.Logical formLearned from7 sentences. A respiratory tract may undergo a lubrication.Logical formLearned from7 sentences. Tracts can be constituted-of-or-filled-with terrain.Logical formLearned from7 sentences. A male may hand_out tracts.Logical formLearned from7 sentences. Tracts can be unbroken.Logical formLearned from7 sentences. Tracts can be in areas.Logical formLearned from7 sentences. (Tract articulators) can be vocal.Logical formLearned from7 sentences. A size may pertain-to a vocal tract.Logical formLearned from7 sentences. Tracts can be constituted-of-or-filled-with mud.Logical formLearned from7 sentences.