A death of a man can be a tragedy.Logical formLearned from16 sentences. Memory may pertain-to a tragedy.Logical formLearned from16 sentences. A tragedy can be avoidable.Logical formLearned from16 sentences. Tragedies can be violent.Logical formLearned from16 sentences. A terrible tragedy may be averted.Logical formLearned from16 sentences. A tragedy may pertain-to a civic-holiday.Logical formLearned from16 sentences. A tragedy may unite persons.Logical formLearned from16 sentences. A tragedy can be without precedent.Logical formLearned from16 sentences. A tragedy may cast a shadow.Logical formLearned from16 sentences. A twisted logic may lead to a tragedy.Logical formLearned from16 sentences. A probe can be into a tragedy.Logical formLearned from16 sentences. A (hostage tragedy) may pertain-to a country.Logical formLearned from16 sentences. A tragedy may mean that something-is-the-case.Logical formLearned from16 sentences. A tragedy may pertain-to a history.Logical formLearned from16 sentences. A tragedy can be an act.Logical formLearned from16 sentences.