Violence may be linked to rivalries.Logical formLearned from7 sentences. A rivalry can be tough.Logical formLearned from6 sentences. A rivalry can be over (land ownership).Logical formLearned from6 sentences. A rivalry may head into an event.Logical formLearned from6 sentences. A rivalry may pertain-to 1990s.Logical formLearned from6 sentences. A derby can be (football rivalry).Logical formLearned from6 sentences. A rivalry may be escalated.Logical formLearned from6 sentences. A person can be part of a rivalry.Logical formLearned from6 sentences. A rivalry can be one-time.Logical formLearned from6 sentences. A role can be in a rivalry.Logical formLearned from6 sentences. Some rivalry can be from a raw brand.Logical formLearned from6 sentences. A rivalry can be with a family.Logical formLearned from6 sentences. A rivalry can be between an university.Logical formLearned from6 sentences. A rivalry can be between clubs.Logical formLearned from6 sentences. A rivalry may begin in a season.Logical formLearned from6 sentences.