A male may run_down stairs.Logical formLearned from90 sentences. Stairs can be creaky.Logical formLearned from90 sentences. Stairs may pertain-to a home.Logical formLearned from84 sentences. Stairs may pertain-to a building.Logical formLearned from82 sentences. Footsteps can be on stairs.Logical formLearned from82 sentences. A side may pertain-to stairs.Logical formLearned from80 sentences. Persons may climb stairs.Logical formLearned from79 sentences. A (stair work) can be wooden.Logical formLearned from76 sentences. Stairs can be wide.Logical formLearned from76 sentences. Stairs can be 1b.Logical formLearned from75 sentences. A male may sit on stairs.Logical formLearned from74 sentences. A female may walk_up stairs.Logical formLearned from73 sentences. A female may walk_down stairs.Logical formLearned from73 sentences. Stairs can be steep.Logical formLearned from73 sentences. A male may come_down stairs.Logical formLearned from72 sentences.