A desk can be at a top of stairs.Logical formLearned from2 sentences. Stairs may run_up a side of a pyramid.Logical formLearned from2 sentences. A band of stairs may serve as a reminder of importance of physical activity.Logical formLearned from2 sentences. A lady may descend stairs.Logical formLearned from2 sentences. Stairs may lead to doors.Logical formLearned from2 sentences. Stairs can be with a candle.Logical formLearned from2 sentences. Stairs may lead to a landing.Logical formLearned from2 sentences. A runner can be on stairs.Logical formLearned from2 sentences. A gate can be across stairs.Logical formLearned from2 sentences. Stairs may access some floors of a building.Logical formLearned from2 sentences. Stairs may lead to (photocopy machines).Logical formLearned from2 sentences. Stairs can be craggy.Logical formLearned from2 sentences. A robot can be capable of climbing stairs.Logical formLearned from2 sentences. A post may pertain-to stairs.Logical formLearned from2 sentences. An alternative can be to a (stair landing).Logical formLearned from2 sentences.