Hundreds can be constituted-of-or-filled-with (riot police).Logical formLearned from12 sentences. Officers may be clad in (riot gear).Logical formLearned from12 sentences. Riots may rock a city.Logical formLearned from12 sentences. Some (riot police officers) may be killed.Logical formLearned from12 sentences. Riots may pertain-to fall.Logical formLearned from12 sentences. Riots may show that something-is-the-case.Logical formLearned from12 sentences. Teams can be in (riot gear).Logical formLearned from12 sentences. Riots may break_out among fans.Logical formLearned from12 sentences. Riots can be under way.Logical formLearned from12 sentences. Riots may explode.Logical formLearned from12 sentences. Riots can be throughout a country.Logical formLearned from12 sentences. Pictures may show riots.Logical formLearned from12 sentences. An account may pertain-to a riot.Logical formLearned from12 sentences. A middle may pertain-to riots.Logical formLearned from12 sentences. Demonstrations may lead to riots.Logical formLearned from12 sentences.