A social order may undergo a collapse.Logical formLearned from20 sentences. A settlement may undergo a collapse.Logical formLearned from20 sentences. Securities may undergo a collapse.Logical formLearned from20 sentences. A collapse may kill some persons.Logical formLearned from20 sentences. A (methane blast) may cause a (ceiling collapse).Logical formLearned from20 sentences. A (ceiling collapse) may kill some workers.Logical formLearned from20 sentences. A collapse may pertain-to a summit.Logical formLearned from20 sentences. A collapse may leave a hole of some square meters.Logical formLearned from20 sentences. (Marketing partner) may undergo a collapse.Logical formLearned from20 sentences. Collapses may occur.Logical formLearned from20 sentences. Persons can be on a verge of collapse.Logical formLearned from20 sentences. Word may pertain-to a collapse.Logical formLearned from20 sentences. A (crane collapse) may pertain-to a US-city.Logical formLearned from20 sentences. (Mortgage lender) may undergo a collapse.Logical formLearned from20 sentences. (Trade liberalization talks) may undergo a collapse.Logical formLearned from20 sentences.