A (building collapse) may pertain-to a world-city.Logical formLearned from23 sentences. A (power grid) may undergo a collapse.Logical formLearned from23 sentences. An investment may undergo a collapse.Logical formLearned from23 sentences. An initiative may undergo a collapse.Logical formLearned from23 sentences. A factory may undergo a collapse.Logical formLearned from23 sentences. A wavefunction may undergo a collapse.Logical formLearned from23 sentences. A string can be constituted-of-or-filled-with collapses.Logical formLearned from23 sentences. An industry can be on a verge of collapse.Logical formLearned from23 sentences. Businesses may undergo a collapse.Logical formLearned from23 sentences. (State socialism) may undergo a collapse.Logical formLearned from23 sentences. An union may undergo a collapse.Logical formLearned from23 sentences. A collapse can be on a road.Logical formLearned from23 sentences. An eastern bloc may undergo a collapse.Logical formLearned from23 sentences. A majority may undergo a collapse.Logical formLearned from23 sentences. A collapse can be irreversible.Logical formLearned from23 sentences.