Planes may be highjacked by terrorists.Logical formLearned from16 sentences. A world-city may kill some terrorists.Logical formLearned from16 sentences. Preemptive strikes can be against terrorists.Logical formLearned from16 sentences. Terrorists can be in a world-city.Logical formLearned from16 sentences. Persons may become terrorists.Logical formLearned from16 sentences. International terrorists can be alleged.Logical formLearned from16 sentences. Terrorists may plant bombs.Logical formLearned from16 sentences. (Terrorist attacks) can be in a country.Logical formLearned from16 sentences. A male may be kidnapped by terrorists.Logical formLearned from16 sentences. Terrorists may seek list.Logical formLearned from16 sentences. Some terrorists may be added by a government-agency.Logical formLearned from16 sentences. A government of a country may round_up some terrorists.Logical formLearned from16 sentences. Some terrorists may be identified as members of al-qaeda.Logical formLearned from16 sentences. Negotiations can be with terrorists.Logical formLearned from16 sentences. Terrorists may use explosives.Logical formLearned from16 sentences.