A female may find an area with stairs.Logical formLearned from13 sentences. Stairs can be shallow.Logical formLearned from13 sentences. Stair may pertain to robot.Logical formLearned from13 sentences. Stair may marshale across marking.Logical formLearned from13 sentences. A person may go_up some flights of stairs.Logical formLearned from13 sentences. Carpet can be on stairs.Logical formLearned from13 sentences. A mom may fall_down stairs.Logical formLearned from13 sentences. Some men may stand at a base of stairs.Logical formLearned from13 sentences. A couple may ascend stairs.Logical formLearned from13 sentences. A person may hear footsteps on stairs.Logical formLearned from13 sentences. A male may be headed for stairs.Logical formLearned from13 sentences. A top may pertain-to a (stair case).Logical formLearned from13 sentences. A male may head_up stairs.Logical formLearned from13 sentences. (Death cab) can be for stairs.Logical formLearned from13 sentences. Stairs can be in a building.Logical formLearned from13 sentences.