[PAR] [TLE] Summadayze [SEP] Summadayze is an annual Australian music festival held in the month of January.  The first event occurred on 1 January 1998 at the Sidney Myer Music Bowl in Melbourne.  It has since expanded into a four city festival including one in New Zealand.  Summadayze is organised by Future Entertainment. [PAR] [TLE] Sidney Myer Music Bowl [SEP] The Sidney Myer Music Bowl is an outdoor performance venue in Melbourne, Victoria, Australia.  It is located in the lawns and gardens of Kings Domain, Linlithgow Ave, Melbourne, close to the Arts Centre and the Southbank entertainment precinct.  It was officially opened by Prime Minister Robert Menzies on 12 February 1959, with an audience of 30,000 people, and is listed on the Victorian Heritage Register.
[PAR] [TLE] Summadayze [ SEP ] Summadayze is an annual Australian music festival held in the month of January . The first event occurred on 1 January 1998 at the Sidney Myer Music Bowl in Melbourne . It has since expanded into a four city festival including one in New Zealand . Summadayze is organised by Future Entertainment . [PAR] [TLE] Sidney Myer Music Bowl [ SEP ] The Sidney Myer Music Bowl is an outdoor performance venue in Melbourne , Victoria , Australia . It is located in the lawns and gardens of Kings Domain , Linlithgow Ave , Melbourne , close to the Arts Centre and the Southbank entertainment precinct . It was officially opened by Prime Minister Robert Menzies on 12 February 1959 , with an audience of 30,000 people , and is listed on the Victorian Heritage Register .
When was the arena, at which the first Summadayze festival was held, officially opened ?
When was the arena , at which the first Summadayze festival was held , officially opened ?
12 February 1959,
12 February 1959,