A side may pertain-to a rivalry.Logical formLearned from16 sentences. A rivalry can be between jets.Logical formLearned from16 sentences. Rivalries may pertain-to a person.Logical formLearned from16 sentences. A rivalry can be with a us-state.Logical formLearned from16 sentences. Rivalries may intensify.Logical formLearned from16 sentences. Rivalries may be accentuated by (wealth disparities).Logical formLearned from16 sentences. Rivalries may take a form of (border disputes).Logical formLearned from16 sentences. Rivalries can be between members of a cooperation-council.Logical formLearned from16 sentences. A rivalry can be destructive.Logical formLearned from16 sentences. A time can be constituted-of-or-filled-with rivalry.Logical formLearned from16 sentences. Rivalry can be between some nations.Logical formLearned from16 sentences. An era can be constituted-of-or-filled-with rivalry.Logical formLearned from16 sentences. A rivalry can be colonial.Logical formLearned from16 sentences. Rivalries may block agreement.Logical formLearned from16 sentences. A rivalry can be between men.Logical formLearned from16 sentences.