Part of a first floor of stairs of a school may collapse.Logical formLearned from2 sentences. Stairs can be in a (town house).Logical formLearned from2 sentences. Firemen may bound_up stairs.Logical formLearned from2 sentences. Aides may count a number of stairs.Logical formLearned from2 sentences. A female may yell before continue_upping stairs.Logical formLearned from2 sentences. Stairs may pertain-to a home.Logical formLearned from2 sentences. Firefighters may come_up stairs.Logical formLearned from2 sentences. Some men may walk_up stairs from a cabin.Logical formLearned from2 sentences. Stairs may be suspended.Logical formLearned from2 sentences. Stairs can be after an attack.Logical formLearned from2 sentences. Stairs can be 2b.Logical formLearned from2 sentences. Stairs may homer in some games.Logical formLearned from2 sentences. Stairs may lead into an (embassy building).Logical formLearned from2 sentences. Stairs can be in condoes.Logical formLearned from2 sentences. (Stair railings) can be for air.Logical formLearned from2 sentences.