A rivalry may begin in some season.Logical formLearned from5 sentences. A rivalry can be with a man.Logical formLearned from5 sentences. A male may enter into a rivalry.Logical formLearned from5 sentences. Rivalry can be between brothers.Logical formLearned from5 sentences. A rivalry may be resolved.Logical formLearned from5 sentences. History may pertain-to a rivalry.Logical formLearned from5 sentences. A basis may pertain-to a rivalry.Logical formLearned from5 sentences. A rivalry can be between some towns.Logical formLearned from5 sentences. A rivalry can be informal.Logical formLearned from5 sentences. A rivalry can be prominent.Logical formLearned from5 sentences. A story can be about a rivalry.Logical formLearned from5 sentences. Rivalries can be between powers.Logical formLearned from5 sentences. A rivalry can be contested.Logical formLearned from5 sentences. A background can be constituted-of-or-filled-with rivalry.Logical formLearned from5 sentences. (Football rivalries) can be in the world.Logical formLearned from5 sentences.