A male may charge_up stairs.Logical formLearned from4 sentences. A male may mount stairs to a second floor.Logical formLearned from4 sentences. A stretch can be constituted-of-or-filled-with stairs.Logical formLearned from4 sentences. A female may climb stairs to a (childhood room).Logical formLearned from4 sentences. A figure may climb stairs.Logical formLearned from4 sentences. Persons may come_up stairs.Logical formLearned from4 sentences. A female may manage stairs.Logical formLearned from4 sentences. Flights can be constituted-of-or-filled-with (marble stairs).Logical formLearned from4 sentences. A son may saunter_down stairs.Logical formLearned from4 sentences. Stairs may pertain-to a bus.Logical formLearned from4 sentences. Robots may climb_up stairs.Logical formLearned from4 sentences. Stairs can be to rooms.Logical formLearned from4 sentences. A person may find a set of stairs.Logical formLearned from4 sentences. Stairs can be maintained.Logical formLearned from4 sentences. Stairs can be at a time.Logical formLearned from4 sentences.