Slippers can be on stairs.Logical formLearned from2 sentences. A male may hop_up stairs.Logical formLearned from2 sentences. Persons may go_up some flights of stairs to a room.Logical formLearned from2 sentences. A voice can be on stairs.Logical formLearned from2 sentences. Stairs may pertain-to a bar.Logical formLearned from2 sentences. Stairs can be snowy.Logical formLearned from2 sentences. A person may arrive at a bottom of stairs.Logical formLearned from2 sentences. A side may pertain-to a (stair well).Logical formLearned from2 sentences. A US-president may climb stairs.Logical formLearned from2 sentences. (Basement stairs) can be steep.Logical formLearned from2 sentences. Stairs may pertain-to a hostel.Logical formLearned from2 sentences. Stairs may lead to an office.Logical formLearned from2 sentences. A male may fall_off stairs.Logical formLearned from2 sentences. A male may go_down stairs to a basement.Logical formLearned from2 sentences. A person may lead_up a male stairs.Logical formLearned from2 sentences.