A female can be at a bottom of stairs.Logical formLearned from6 sentences. Some flights can be constituted-of-or-filled-with (stone stairs).Logical formLearned from6 sentences. A width may pertain-to a stair.Logical formLearned from6 sentences. (Marble stairs) can be broad.Logical formLearned from6 sentences. Problems can be with stairs.Logical formLearned from6 sentences. Persons may head for stairs.Logical formLearned from6 sentences. Children may fall_down stairs.Logical formLearned from6 sentences. Stairs can be to first floor.Logical formLearned from6 sentences. Stairs may pertain-to an airliner.Logical formLearned from6 sentences. Stairs may go 4-for-5 with a homer.Logical formLearned from6 sentences. Stairs may give way.Logical formLearned from6 sentences. A female may stumble_down stairs.Logical formLearned from6 sentences. Stairs may pertain-to a basilica.Logical formLearned from6 sentences. Stairs may pertain-to a (government building).Logical formLearned from6 sentences. Troops may storm_up stairs to a second floor.Logical formLearned from6 sentences.