(Brass nosings) of stairs may be worn smooth by travel.Logical formLearned from3 sentences. Stairs may pertain-to a defendant.Logical formLearned from3 sentences. A citizen may sit in_front_of stairs.Logical formLearned from3 sentences. A person may go_down a set of stairs.Logical formLearned from3 sentences. Pieces may pertain-to stairs.Logical formLearned from3 sentences. A castle may have stairs.Logical formLearned from3 sentences. Steps may be heard on a (dungeon stair).Logical formLearned from3 sentences. A female may go_up stairs to an instrument.Logical formLearned from3 sentences. A heavy traffic may clear before attempting stairs.Logical formLearned from3 sentences. A (stair flight) can be adjacent.Logical formLearned from3 sentences. (Aisle stairs) can be in (assembly areas).Logical formLearned from3 sentences. Requirements can be for stairs.Logical formLearned from3 sentences. Patrons may use stairs.Logical formLearned from3 sentences. Stairs may wind.Logical formLearned from3 sentences. A (stair escape) may be provided from a (floor level).Logical formLearned from3 sentences.