A stair can be oval.Logical formLearned from2 sentences. A stair may climb.Logical formLearned from2 sentences. A structure may pertain-to stairs.Logical formLearned from2 sentences. A woman may walk_up stairs.Logical formLearned from2 sentences. A story can be with stairs.Logical formLearned from2 sentences. Stairs can be quicker.Logical formLearned from2 sentences. A female may topple_down a flight of stairs.Logical formLearned from2 sentences. An elbow may pertain-to stairs.Logical formLearned from2 sentences. Stairs can be more.Logical formLearned from2 sentences. A right can be at a top of stairs.Logical formLearned from2 sentences. A stair can be built-in.Logical formLearned from2 sentences. A person may fall at a bottom of stairs.Logical formLearned from2 sentences. A person may count stairs.Logical formLearned from2 sentences. Stairs can be to a pool.Logical formLearned from2 sentences. Stairs may lead_up to doors.Logical formLearned from2 sentences.