A person can be afraid of stairs.Logical formLearned from3 sentences. A female may sweep stairs.Logical formLearned from3 sentences. A stair can be evil.Logical formLearned from3 sentences. Stairs can be a challenge.Logical formLearned from3 sentences. A doorway may pertain-to stairs.Logical formLearned from3 sentences. A female may move_up stairs.Logical formLearned from3 sentences. A voice may yell_up stairs.Logical formLearned from3 sentences. A woman may walk_down stairs.Logical formLearned from3 sentences. An edge may pertain-to a stair.Logical formLearned from3 sentences. A person may own_down some flights of stairs.Logical formLearned from3 sentences. A ward can be on stairs.Logical formLearned from3 sentences. A person may run on stairs.Logical formLearned from3 sentences. A male can be afraid of stairs.Logical formLearned from3 sentences. A hallway can be constituted-of-or-filled-with stairs.Logical formLearned from3 sentences. A door can be to (basement stairs).Logical formLearned from3 sentences.