Gangs can be in a region.Logical formLearned from12 sentences. Attacks can be from gangs.Logical formLearned from12 sentences. Battles may degenerate into (gang violence).Logical formLearned from12 sentences. Gangs may be targeted.Logical formLearned from12 sentences. A night can be constituted-of-or-filled-with (gang attacks).Logical formLearned from12 sentences. (Gang attacks) can be on (police stations).Logical formLearned from12 sentences. Persons can be in a gang.Logical formLearned from12 sentences. A (pirate gang) can be armed.Logical formLearned from12 sentences. A gang may be surrounded.Logical formLearned from12 sentences. A male may be involved in gangs.Logical formLearned from12 sentences. Gangs may be linked to politicians.Logical formLearned from12 sentences. Gangs can be in force.Logical formLearned from12 sentences. Members may pertain-to a (kidnapping gang).Logical formLearned from12 sentences. Gangs may terrorise a population.Logical formLearned from12 sentences. Police may arrest some members of a gang.Logical formLearned from12 sentences.