(Exit stairs) may be inclosed.Logical formLearned from2 sentences. Stairs can be to an arena.Logical formLearned from2 sentences. A male may descend (basement stairs).Logical formLearned from2 sentences. A world-city may fall_down stairs.Logical formLearned from2 sentences. A hand may grab at a stair.Logical formLearned from2 sentences. (Stair steps) may lead to an area.Logical formLearned from2 sentences. A far side may pertain-to stairs.Logical formLearned from2 sentences. Signs may encourage a use of stairs.Logical formLearned from2 sentences. A stair may writhe under a tramp.Logical formLearned from2 sentences. A footing can be on stairs.Logical formLearned from2 sentences. An incident can be on stairs.Logical formLearned from2 sentences. Some glass may fall on stairs.Logical formLearned from2 sentences. A foot can be on a stair.Logical formLearned from2 sentences. Stairs can be decorated.Logical formLearned from2 sentences. A hall can be at a bottom of stairs.Logical formLearned from2 sentences.