Hundreds of demonstrators may clash with (riot police).Logical formLearned from9 sentences. Some prisoners may be killed in a riot.Logical formLearned from9 sentences. Some deaths can be during riots.Logical formLearned from9 sentences. A riot can be in male.Logical formLearned from9 sentences. Riots may last for some days.Logical formLearned from9 sentences. Riots may trigger a detention.Logical formLearned from9 sentences. Some (pro-democracy activists) may witness riots.Logical formLearned from9 sentences. (Bread riots) can be around a country.Logical formLearned from9 sentences. Thousands of youths may run riot.Logical formLearned from9 sentences. A (prison riot) can be violent.Logical formLearned from9 sentences. A (night riot) may pertain-to a weekday.Logical formLearned from9 sentences. A repeat may pertain-to (summit riots).Logical formLearned from9 sentences. (Summit riots) may pertain-to year.Logical formLearned from9 sentences. A probe can be into riots.Logical formLearned from9 sentences. Riots can be at an university.Logical formLearned from9 sentences.