Question: The Day of the Roses was based on which event, which took place just outside Sydney, Australia?

Context articles: Auckland Anniversary Regatta
1908 Australasian Championships
UFC 110
Gold Coast Marathon
MoSo
Granville rail disaster
How Many Birds
Lockdown (2007)
The Day of the Roses
NXT TakeOver: Brooklyn

The first Auckland Anniversary Regatta took place in 1840 and has grown to become one of the largest single day regattas and is the oldest sporting event in New Zealand.
 The number of boats entered in 2008 was 400 which when compared to the Sydney Australia Day Regatta entry of 120 gives an indication of the magnitude of this event.
 The size is particularly interesting when traditionally the prizes have just been the honour of winning.
 As a yachting event it pre-dates the more prestigious America's Cup by 11 years.
The 1908 Australasian Championships was a tennis tournament that took place on outdoor grass courts in Sydney, Australia.
 The preliminary rounds were played at the Sydney Cricket Ground while the final took place on the Double Bay Grounds.
 It was the fourth edition of the Australasian Championships (now known as the Australian Open), the first held in Sydney and the third Grand Slam tournament of the year.
 It consisted of a men's singles and doubles event.
 Fred Alexander won the singles event and became the first non-Australasian to win the title.
UFC 110: Nogueira vs. Velasquez was a mixed martial arts event held by the Ultimate Fighting Championship (UFC) on Sunday, 21 February 2010 in Sydney, Australia, at Acer Arena.
 The event marked the UFC's first trip to Australia.
 The main card was scheduled for 2:00 pm Sunday in Sydney to cater to the U.S. audience, meaning that the event took place at the regular U.S. time (10:00 pm ET, on Saturday 20 February).
The Gold Coast Marathon (branded Gold Coast Airport Marathon for sponsorship reasons) is an annual marathon race on the Gold Coast, Queensland, Australia.
 It is "Australia's premier road race", and is one of only two marathons in Australia to hold a IAAF Gold Label status (the other being Sydney).
 The event is held on the first Sunday of July each year with races also being held the day before.
 The event was first held on 2 September 1979 as part of a health awareness campaign for the Gold Coast.
 The 39th edition took place on 2 July 2017.
MoSo was a music and technology event that has been held annually in Saskatoon, Saskatchewan in Canada that first began in 2011 and held its final event in 2016.
 It was divided into two parts held concurrently: a technology conference known as MoSo Conf (the name MoSo is derived from the term "Mobile Social"), and a music festival known as MoSo Fest.
 Technology-related sessions took place during the day Thursday to Saturday; musical performances generally took place at night from Wednesday to Sunday, although a daytime outdoor stage was added in 2014 accompanied by several food carts.
 The event typically took place in the second or third week of June.
The Granville rail disaster occurred on Tuesday 18 January 1977 at Granville, a western suburb of Sydney, Australia, when a crowded commuter train derailed, running into the supports of a road bridge that collapsed onto two of the train's passenger carriages.
 It is the worst rail disaster in Australian history: 84 people died, more than 210 were injured, and 1,300 were affected.
"How Many Birds" is a song written by Barry Gibb, recorded by the Bee Gees in 1966 for the "Spicks and Specks" album.
 Recording took place at St. Clair Studios, Hurstville outside Sydney.
Lockdown (2007) was a professional wrestling pay-per-view (PPV) event produced by Total Nonstop Action Wrestling, which took place on April 15, 2007 at the Family Arena in Saint Charles, Missouri.
 This was the second monthly pay-per-view, after Bound for Glory (2006), to be held outside Orlando, Florida.
 It was the third annual event under the Lockdown chronology.
 Eight professional wrestling matches were featured on the event's card.
 In the tradition of Lockdown events, every match took place inside a steel structure with six sides, known as Six Sides of Steel.
 It was the final TNA Wrestling pay-per-view event to officially feature National Wrestling Alliance championships (although the physical belts were used at the following Sacrifice event, the titles had been vacated by the NWA in the morning of the day of the event).
The Day of the Roses is a two-part Australian television mini-series, a docu-drama directed by Peter Fisk, based on the events of the 1977 Granville railway disaster.
 The film was made in 1998 and runs over 3.5 hours.
NXT TakeOver: Brooklyn was a professional wrestling show in the NXT TakeOver series that took place on August 22, 2015.
 The NXT TakeOver: Brooklyn event was produced by WWE, showcasing its NXT developmental brand, and streamed live on the WWE Network.
 The event took place at the Barclays Center in Brooklyn, New York - the first night of what was billed as a WWE "triple-header" at the arena, with SummerSlam taking place the following evening, and "Raw" the night after that.
 This was the first NXT TakeOver held outside of Full Sail University; WWE promoted it as NXT being "on the biggest stage yet".
 Starting with NXT Arrival on February 27, 2014, WWE's developmental league NXT has held major shows broadcast live on the WWE network, with the August event being the seventh event in the series and was sold out.