A female may sit at a top of stairs.Logical formLearned from13 sentences. A female may go_up stairs.Logical formLearned from13 sentences. A person may bound_up stairs.Logical formLearned from13 sentences. Stairs can be portable.Logical formLearned from13 sentences. Stairs may pertain-to a station.Logical formLearned from13 sentences. Stairs can be dusty.Logical formLearned from13 sentences. A person may take stairs.Logical formLearned from13 sentences. A stair of some (stone steps) may climb a hill to a church.Logical formLearned from13 sentences. A stair can be constituted-of-or-filled-with some (stone steps).Logical formLearned from13 sentences. A person may yell_up stairs.Logical formLearned from13 sentences. Stairs can be scary.Logical formLearned from13 sentences. Stairs can be worn.Logical formLearned from13 sentences. A male may fall_down stairs.Logical formLearned from12 sentences. Stairs may undergo a use.Logical formLearned from12 sentences. A person may run stairs.Logical formLearned from12 sentences.