Stairs may pertain-to an (apartment building).Logical formLearned from50 sentences. A stair can be grand.Logical formLearned from48 sentences. A person may go_down stairs.Logical formLearned from48 sentences. Persons may walk_down stairs.Logical formLearned from48 sentences. A stair may pertain-to a male.Logical formLearned from47 sentences. Stairs may pertain-to an apartment.Logical formLearned from47 sentences. A person may reach a top of stairs.Logical formLearned from47 sentences. A male may mount stairs.Logical formLearned from46 sentences. A person may come_down stairs.Logical formLearned from46 sentences. An edge may pertain-to stairs.Logical formLearned from46 sentences. A female may come_down stairs.Logical formLearned from46 sentences. Stairs can be grand.Logical formLearned from45 sentences. A stair can be narrow.Logical formLearned from43 sentences. A person may walk_down stairs.Logical formLearned from43 sentences. Stairs can be open.Logical formLearned from43 sentences.