An upsurge may follow months of riots.Logical formLearned from11 sentences. An assault may trigger riots.Logical formLearned from11 sentences. Riots may be preceded.Logical formLearned from11 sentences. A standoff can be between (riot police).Logical formLearned from11 sentences. Some persons may be hurted in riots.Logical formLearned from11 sentences. Some men may be killed in riots.Logical formLearned from11 sentences. Police can be with (riot gear).Logical formLearned from11 sentences. Track can be after riots.Logical formLearned from11 sentences. Riots may be triggered by a decision.Logical formLearned from11 sentences. A riot may erupt a month.Logical formLearned from11 sentences. A riot can be at a garden.Logical formLearned from11 sentences. Riots can be by activists.Logical formLearned from11 sentences. A country may triple a contingent of (riot police).Logical formLearned from11 sentences. A male may lead to riots.Logical formLearned from11 sentences. (Riot police) can be with (water cannons).Logical formLearned from11 sentences.