Stairs can be in an area.Logical formLearned from3 sentences. A baby may fall_down a flight of stairs.Logical formLearned from3 sentences. Rocket may take stairs.Logical formLearned from3 sentences. Stairs can be in the world.Logical formLearned from3 sentences. A female may come_down from stairs.Logical formLearned from3 sentences. Doors may walk_up stairs.Logical formLearned from3 sentences. Doors may walk_up stairs to a library.Logical formLearned from3 sentences. Stairs may be carven.Logical formLearned from3 sentences. An outline may pertain-to stairs.Logical formLearned from3 sentences. A male may get to a foot of stairs.Logical formLearned from3 sentences. A person may move_up stairs to books.Logical formLearned from3 sentences. A husband may come_down stairs.Logical formLearned from3 sentences. A male may wait at a foot of stairs.Logical formLearned from3 sentences. A male can be by stairs.Logical formLearned from3 sentences. Stairs may pertain-to a playground.Logical formLearned from3 sentences.