Question: What Melbourne, Australia street gang founded by members of Victoria's South Sudanese community fought a rival gang made up of youths from a South Pacific background in March 2016 after the Moomba parade.   
Sentence (from "Islander 23"): Islander 23 came to prominence in the national media after a large scale brawl in Melbourne's Central Business District between it and the rival gang Apex in March 2016 after the Moomba parade.
Relevant evidence: Yes