Stairs can be in a building.Logical formLearned from16 sentences. A female may head_up stairs.Logical formLearned from16 sentences. Stairs may lead to a bedroom.Logical formLearned from16 sentences. Stairs can be monumental.Logical formLearned from16 sentences. A female may race_up stairs.Logical formLearned from16 sentences. Persons may reach stairs.Logical formLearned from16 sentences. Stairs may lead to a room.Logical formLearned from16 sentences. Stairs may lead to an office.Logical formLearned from16 sentences. Some stories can be constituted-of-or-filled-with stairs.Logical formLearned from16 sentences. A flight can be constituted-of-or-filled-with (marble stairs).Logical formLearned from16 sentences. A female may head for stairs.Logical formLearned from16 sentences. A carpet can be on stairs.Logical formLearned from16 sentences. A (tank shell) may destroy stairs to a floor.Logical formLearned from16 sentences. A person may fall_down stairs.Logical formLearned from15 sentences. A stair can be monumental.Logical formLearned from15 sentences.