Footsteps can be on stairs.Logical formLearned from27 sentences. A female may come_up stairs.Logical formLearned from27 sentences. A (stair turret) can be octagonal.Logical formLearned from26 sentences. A person may run_up stairs.Logical formLearned from26 sentences. Stairs can be red.Logical formLearned from26 sentences. Stairs may pertain-to a building.Logical formLearned from26 sentences. Stairs can be to a basement.Logical formLearned from26 sentences. Stairs can be slippery.Logical formLearned from25 sentences. Persons may get to stairs.Logical formLearned from25 sentences. Some floors can be constituted-of-or-filled-with stairs.Logical formLearned from25 sentences. A person may reach a bottom of stairs.Logical formLearned from25 sentences. A person may get_up stairs.Logical formLearned from25 sentences. Stairs can be broken.Logical formLearned from25 sentences. Stairs can be to a floor.Logical formLearned from25 sentences. A female may climb stairs.Logical formLearned from25 sentences.