Stairs may go some at-bats.Logical formLearned from2 sentences. Pyramids can be with stairs.Logical formLearned from2 sentences. Some student may fall_down some stairs.Logical formLearned from2 sentences. Stairs can be in an anatomy.Logical formLearned from2 sentences. A time may race_up stairs.Logical formLearned from2 sentences. Workers may fall_down stairs.Logical formLearned from2 sentences. A hijacker may walk_down (aircraft stairs).Logical formLearned from2 sentences. A political-leader may walk_down stairs.Logical formLearned from2 sentences. Stairs may pertain-to heaven.Logical formLearned from2 sentences. Amies may fall_down stairs.Logical formLearned from2 sentences. Stairs may be vacuumed.Logical formLearned from2 sentences. A blast may pertain-to stairs.Logical formLearned from2 sentences. Stairs may go 3-for-5.Logical formLearned from2 sentences. Stairs can be to the sky.Logical formLearned from2 sentences. Legs may take stairs to a tent.Logical formLearned from2 sentences.