A pope may descend stairs of a flight.Logical formLearned from2 sentences. A student may fall_down stairs.Logical formLearned from2 sentences. Stairs can be during a demonstration.Logical formLearned from2 sentences. A male may descend hundreds of stairs.Logical formLearned from2 sentences. Passengers may walk_down stairs.Logical formLearned from2 sentences. Stairs may think.Logical formLearned from2 sentences. A male may slip on stairs.Logical formLearned from2 sentences. An asimo may climb stairs.Logical formLearned from2 sentences. A brother may come to a top of stairs.Logical formLearned from2 sentences. Stairs may pertain-to a farmhouse.Logical formLearned from2 sentences. A red carpet may lead_up a flight of stairs.Logical formLearned from2 sentences. Stairs can be in wheelchairs.Logical formLearned from2 sentences. Stairs may pertain-to a presidential jet.Logical formLearned from2 sentences. Stairs can be in a center of a mosque.Logical formLearned from2 sentences. Stairs can be a pair of shoes.Logical formLearned from2 sentences.