A male may step_down stairs of a military-or-other-action-organization.Logical formLearned from2 sentences. Stairs may pertain-to a plaza.Logical formLearned from2 sentences. Some women may fall_down stairs.Logical formLearned from2 sentences. Stairs may pertain-to stations.Logical formLearned from2 sentences. A brown envelope can be at a foot of stairs of stations.Logical formLearned from2 sentences. A person may stand at stairs.Logical formLearned from2 sentences. Stairs can be at a home of golfer.Logical formLearned from2 sentences. A stair can be with some steps.Logical formLearned from2 sentences. A male may walk_up some stairs.Logical formLearned from2 sentences. Structural member may consist of a part of a stair.Logical formLearned from2 sentences. A top may pertain-to a (stair tower).Logical formLearned from2 sentences. A (pedestrian tunnel) can be with stairs.Logical formLearned from2 sentences. A (stair turret) may rise.Logical formLearned from2 sentences. (Spiral stairs) can be narrow.Logical formLearned from2 sentences. A stair may pertain-to ambassadors.Logical formLearned from2 sentences.