A couple may descend stairs.Logical formLearned from2 sentences. Users may climb stairs.Logical formLearned from2 sentences. Pumps may squish sprays of water from stairs.Logical formLearned from2 sentences. Stairs may pertain-to a schoolhouse.Logical formLearned from2 sentences. Stairs may be twisted.Logical formLearned from2 sentences. Stairs may be built at angles.Logical formLearned from2 sentences. Stairs can be 15-for-40.Logical formLearned from2 sentences. Stairs may be festooned with wheat.Logical formLearned from2 sentences. Holes can be in stairs.Logical formLearned from2 sentences. Stairs may trigger pain.Logical formLearned from2 sentences. Some flights of stairs may lead to a (steel door).Logical formLearned from2 sentences. A prince may walk_down stairs.Logical formLearned from2 sentences. Coats may hang behind stairs.Logical formLearned from2 sentences. Children may scramble_up stairs to a stage.Logical formLearned from2 sentences. A person may climb (subway stairs).Logical formLearned from2 sentences.