A female may reach stairs.Logical formLearned from21 sentences. A male may reach stairs.Logical formLearned from21 sentences. A corner may pertain-to stairs.Logical formLearned from20 sentences. Persons may run_down stairs.Logical formLearned from20 sentences. A male may walk stairs.Logical formLearned from20 sentences. Stairs may creak.Logical formLearned from20 sentences. Stairs can be dichotomous.Logical formLearned from20 sentences. A person can be at a top of stairs.Logical formLearned from20 sentences. A person may have stairs.Logical formLearned from20 sentences. Stairs may pertain-to a tower.Logical formLearned from20 sentences. A flight can be constituted-of-or-filled-with some stairs.Logical formLearned from19 sentences. Persons may go_up stairs.Logical formLearned from19 sentences. Stairs can be dirty.Logical formLearned from19 sentences. A (meaty shaft) can be in stairs.Logical formLearned from19 sentences. Stairs may pertain-to a road.Logical formLearned from19 sentences.