A door can be to stairs.Logical formLearned from18 sentences. A person can be at a bottom of stairs.Logical formLearned from18 sentences. An other side may pertain-to stairs.Logical formLearned from18 sentences. A set can be constituted-of-or-filled-with (stone stairs).Logical formLearned from18 sentences. A moat may feature a stair.Logical formLearned from18 sentences. Stairs may go_up.Logical formLearned from18 sentences. A person may creep_up stairs.Logical formLearned from18 sentences. Stairs can be famous.Logical formLearned from18 sentences. A person may see stairs.Logical formLearned from18 sentences. Stairs may lead to an apartment.Logical formLearned from18 sentences. A stair can be broad.Logical formLearned from18 sentences. Some flights can be constituted-of-or-filled-with narrow stairs.Logical formLearned from18 sentences. A person may go_up a flight of stairs.Logical formLearned from18 sentences. A female may mount stairs.Logical formLearned from18 sentences. A female may stride_down stairs of a plane.Logical formLearned from18 sentences.