A person may leave a person on stairs.Logical formLearned from4 sentences. A (fat jerk) may leave a male on stairs.Logical formLearned from4 sentences. A female may tipto to a top of stairs.Logical formLearned from4 sentences. Persons may run_up stairs.Logical formLearned from4 sentences. Someone may use stairs.Logical formLearned from4 sentences. A female may hurry_up stairs.Logical formLearned from4 sentences. Persons may climb a flight of stairs.Logical formLearned from4 sentences. A button can be for stairs.Logical formLearned from4 sentences. A female may move toward stairs.Logical formLearned from4 sentences. Steps may fall on stairs.Logical formLearned from4 sentences. Cab can be for stairs.Logical formLearned from4 sentences. A piano may fall_down a flight of stairs.Logical formLearned from4 sentences. A female may get to a bottom of stairs.Logical formLearned from4 sentences. A way can be toward stairs.Logical formLearned from4 sentences. (Oak stairs) can be polished.Logical formLearned from4 sentences.