Riots may pertain-to a year.Logical formLearned from23 sentences. A night may pertain-to a riot.Logical formLearned from23 sentences. A riot may kill some persons.Logical formLearned from23 sentences. A riot can be drunken.Logical formLearned from23 sentences. Riots may undergo an anticipation.Logical formLearned from23 sentences. (Riot police) may arrive.Logical formLearned from23 sentences. (Tortilla riots) can be in a country.Logical formLearned from23 sentences. (Riot police) can be in helmets.Logical formLearned from23 sentences. Riots may be followed by years of violence.Logical formLearned from23 sentences. A massacre may spark riots.Logical formLearned from23 sentences. Riots can be over (price hikes).Logical formLearned from23 sentences. Persons may stab in riot.Logical formLearned from23 sentences. Images can be constituted-of-or-filled-with (riot police).Logical formLearned from23 sentences. A (riot police) can be helmeted.Logical formLearned from23 sentences. (Riot police) may lob gas.Logical formLearned from23 sentences.