Masterpieces can be at a top of stairs.Logical formLearned from7 sentences. Stairs can be from a deck.Logical formLearned from7 sentences. Stairs may fall.Logical formLearned from7 sentences. A house can be with stairs.Logical formLearned from7 sentences. Stairs can be precipitous.Logical formLearned from7 sentences. Persons may rush_down stairs.Logical formLearned from7 sentences. A person may trot_down stairs.Logical formLearned from7 sentences. A male can be at a foot of stairs.Logical formLearned from7 sentences. A female may climb stairs to a second floor of a (canal house).Logical formLearned from7 sentences. Stairs can be well-lighted.Logical formLearned from7 sentences. A mother may fall_down stairs.Logical formLearned from7 sentences. Some flights can be constituted-of-or-filled-with winding stairs.Logical formLearned from7 sentences. A female may stand at a foot of stairs.Logical formLearned from7 sentences. Persons may stand on stairs.Logical formLearned from7 sentences. Stairs may pertain-to a church.Logical formLearned from7 sentences.