A person may collapse on stairs.Logical formLearned from1 sentences. A female may leave by go_downing stairs.Logical formLearned from1 sentences. Persons may walk_up a flight of stairs.Logical formLearned from1 sentences. Stairs may curl around a (mahogany wall) to the left.Logical formLearned from1 sentences. A US-president may jog_down stairs.Logical formLearned from1 sentences. A stair can be sculptured.Logical formLearned from1 sentences. A stair may dance in counterpoint.Logical formLearned from1 sentences. A male may clomp_down stairs.Logical formLearned from1 sentences. Stairs may leave a male.Logical formLearned from1 sentences. Living quarters may have stairs.Logical formLearned from1 sentences. Stairs may run_up walls.Logical formLearned from1 sentences. Stairs may run_out in a ballroom.Logical formLearned from1 sentences. A rhythm may pertain-to moving stairs.Logical formLearned from1 sentences. A girl may stop a female on stairs.Logical formLearned from1 sentences. A female may slip on stairs.Logical formLearned from1 sentences.