Stewards may clash with (riot police).Logical formLearned from9 sentences. Riots may topple president.Logical formLearned from9 sentences. A move may lead to riots.Logical formLearned from9 sentences. A revaluation may spark riots.Logical formLearned from9 sentences. Elements can be constituted-of-or-filled-with riots.Logical formLearned from9 sentences. Information can be about riots.Logical formLearned from9 sentences. (Riot police) may be call_ined by an army.Logical formLearned from9 sentences. Arson can be during riots.Logical formLearned from9 sentences. (Riot police) can be unarmed.Logical formLearned from9 sentences. (Weekend riots) can be deadly.Logical formLearned from9 sentences. A wave of riots may sweep a country.Logical formLearned from9 sentences. (Food riots) may be followed by a coup.Logical formLearned from9 sentences. Riots may break_out in cities.Logical formLearned from9 sentences. Equal opportunities may be draw_uped after riots.Logical formLearned from9 sentences. An incident may spark a riot.Logical formLearned from9 sentences.