A robot may handle stairs.Logical formLearned from2 sentences. Stairs may lead to a floor.Logical formLearned from2 sentences. Stairs may hit a pair of (solo homers).Logical formLearned from2 sentences. A male may climb stairs to a podium.Logical formLearned from2 sentences. A US-president may grip a (stair railing) with a right hand.Logical formLearned from2 sentences. Models may come_down stairs.Logical formLearned from2 sentences. Owners may sweat on a (stair climber).Logical formLearned from2 sentences. A male may fall_down stairs of a tomb.Logical formLearned from2 sentences. Stairs may unfold.Logical formLearned from2 sentences. Stairs may lead_down toward a vault.Logical formLearned from2 sentences. A (construction shack) may be set_uped over a flight of stairs.Logical formLearned from2 sentences. Stairs may become a player.Logical formLearned from2 sentences. (Stone stairs) may be reduced to rubble.Logical formLearned from2 sentences. Passengers may descend stairs to a tarmac.Logical formLearned from2 sentences. A rival may slip on a flight of stairs.Logical formLearned from2 sentences.