A rivalry may exist between riders.Logical formLearned from6 sentences. Rivalries can be entrenched.Logical formLearned from6 sentences. Rivalries can be among warlords.Logical formLearned from6 sentences. Rivalry can be within a party.Logical formLearned from6 sentences. A rivalry may worsen.Logical formLearned from6 sentences. Air can be constituted-of-or-filled-with rivalry.Logical formLearned from6 sentences. Rivalries may split a country.Logical formLearned from6 sentences. Rivalries can be lopsided.Logical formLearned from6 sentences. Rivalry can be in an area.Logical formLearned from6 sentences. A country may be locked in rivalry.Logical formLearned from6 sentences. Rivalry can be between some leaders.Logical formLearned from6 sentences. Auctions may trigger rivalry.Logical formLearned from6 sentences. Attempts may be floundered over rivalry.Logical formLearned from6 sentences. A rivalry can be biennial.Logical formLearned from6 sentences. Rivalry can be between a sheik.Logical formLearned from6 sentences.