A female may take stairs.Logical formLearned from71 sentences. A person may climb stairs.Logical formLearned from70 sentences. A male may ascend stairs.Logical formLearned from70 sentences. Stairs may lead.Logical formLearned from70 sentences. A person may descend stairs.Logical formLearned from69 sentences. Persons may walk_up stairs.Logical formLearned from68 sentences. A person may sit on stairs.Logical formLearned from68 sentences. A female may run_down stairs.Logical formLearned from66 sentences. A female may sit on stairs.Logical formLearned from65 sentences. A person may go_up stairs.Logical formLearned from65 sentences. A series can be constituted-of-or-filled-with stairs.Logical formLearned from64 sentences. A step may pertain-to stairs.Logical formLearned from63 sentences. A direction may pertain-to stairs.Logical formLearned from63 sentences. A person may walk_up stairs.Logical formLearned from60 sentences. Stairs may pertain-to a plane.Logical formLearned from58 sentences.