Stairs can be to attic.Logical formLearned from4 sentences. Stairs can be dangerous.Logical formLearned from4 sentences. A female may go_up stairs to an apartment.Logical formLearned from4 sentences. Persons may see stairs.Logical formLearned from4 sentences. Walls may pertain-to stairs.Logical formLearned from4 sentences. Stairs can be dry.Logical formLearned from4 sentences. A female may get to stairs.Logical formLearned from4 sentences. A male may ascend a stair.Logical formLearned from4 sentences. Stairs may lead to an (upstairs bedroom).Logical formLearned from4 sentences. A (retreat model) can be with (spiral stair).Logical formLearned from4 sentences. Cupboards can be under stairs.Logical formLearned from4 sentences. A female may stand at a base of stairs.Logical formLearned from4 sentences. A male may hear a person on stairs.Logical formLearned from4 sentences. Stairs may be finished.Logical formLearned from4 sentences. Stairs can be to back yard.Logical formLearned from4 sentences.