A scaffolding may undergo a collapse.Logical formLearned from9 sentences. The economies may undergo a collapse.Logical formLearned from9 sentences. European colonialism may undergo a collapse.Logical formLearned from9 sentences. A (market collapse) can be global.Logical formLearned from9 sentences. A reason can be a collapse of a vote.Logical formLearned from9 sentences. A collapse may pertain-to a building.Logical formLearned from9 sentences. An (elevator tower) may undergo a collapse.Logical formLearned from9 sentences. A collapse may do work.Logical formLearned from9 sentences. A russian army may undergo a collapse.Logical formLearned from9 sentences. Dynasties may undergo a collapse.Logical formLearned from9 sentences. Monetary union may undergo a collapse.Logical formLearned from9 sentences. A collapse of an empire may lash to a decline of morals.Logical formLearned from9 sentences. A class may undergo a collapse.Logical formLearned from9 sentences. A collapse can be in (world coffee prices).Logical formLearned from9 sentences. A buildings may undergo a collapse.Logical formLearned from9 sentences.