Question: Who became involved with a cattle and racehorse "Just A Dash" to win Australia's most prestigious annual Thoroughbred horse race?

Context paragraphs:
Magic Millions: Magic Millions Sales Pty Ltd is an Australian Thoroughbred racehorse auction house which holds auctions around Australia each year including its world famous Gold Coast Yearling Sale at Surfers Paradise in Queensland.  Seven days of auctions are joined by a major Thoroughbred horse race meeting where all nine races are only open to horses who were bought at auctions staged by Magic Millions over the previous years.  The race events includes the $2 million Magic Millions Classic for two-year-olds - a race which carries a $500,000 bonus for all female raced runners.  The Gold Coast Raceday alone boasts prizemoney of $10 million and was the first race meeting held in Australasia with a $10 million total purse.

Neale Lavis: Neale John Lavis, OAM (born 11 June 1930) is an Australian equestrian and Olympic champion.  He won a team gold medal in "eventing" at the 1960 Summer Olympics in Rome, and a silver medal in individual eventing.  He also participated at the 1964 Tokyo Olympics, but did not win any medals there.  He later became involved with a cattle and racehorse stud in Braidwood, which produced Just A Dash, the winner of the 1981 Melbourne Cup, and Strawberry Road, the 1982/83 Racehorse of the Year.

Melbourne Cup: The Melbourne Cup is Australia's most prestigious annual Thoroughbred horse race.  It is a 3,200 metre race for three-year-olds and over, conducted by the Victoria Racing Club on the Flemington Racecourse in Melbourne, Victoria as part of the Melbourne Spring Racing Carnival.  It is the richest "two-mile" handicap in the world, and one of the richest turf races.  The event starts at 3pm on the first Tuesday in November and is known locally as "the race that stops a nation".

Hendrie Stakes: The Hendrie Stakes is a Thoroughbred horse race run annually at Woodbine Racetrack in Toronto, Ontario, Canada.  Held in mid May, the Grade III sprint race is open to fillies and mares, aged four and older and is contested over a distance of six and a half furlongs on Polytrack synthetic dirt.  It offers a purse of $116,205 with an additional $50,000 for Ontario-bred horses provided by the Canadian Thoroughbred Horse Society (CTHS) through its Thoroughbred Improvement Program (TIP).

2013 Melbourne Cup: The 2013 Emirates Melbourne Cup was the 153rd running of the Melbourne Cup, Australia's most prestigious Thoroughbred horse race.  The race, held on 5 November 2013, at Flemington Racecourse in Melbourne, Victoria, was won by Fiorente.  The horse, owned by Andrew Roberts, was bred in Ireland, trained in Australia by Gai Waterhouse, and ridden by jockey Damien Oliver.  It was Oliver's third victory in the event, after previous wins in 1995 and 2002, and his first start after a ten-month ban for a betting offence.  Waterhouse, the daughter of Tommy J. Smith, who trained winners in 1955 and 1981, became the first Australian woman to train a winner.  The race was attended by 104,169 people—the Victoria Racing Club (VRC) had capped attendance at 110,000 for the Melbourne Cup and the Victoria Derby, but this mark was not reached at either race.  Approximately A$90.6 million was wagered on the race through Totalisator Agency Boards in Victoria and New South Wales, with another $37.5 million wagered through equivalent agencies in Queensland, South Australia, and Tasmania.

Josie Carroll: Josie Carroll (born December 8, 1957 in Scarborough, Ontario) is a Canadian Thoroughbred horse trainer and the first woman trainer to win the Queen's Plate, the oldest thoroughbred horse race in Canada and Canada's most prestigious race.

Golden Choice: Golden Choice (foaled 1983) is a Canadian Thoroughbred racehorse best known for winning Canada's most prestigious horse race, the Queen's Plate.  Sired by Val de l'Orne, the 1975 Prix du Jockey Club winner, his damsire was Barachois, a son of Northern Dancer.  Golden Choice was purchased as a yearling for $60,000 at the Canadian Thoroughbred Horse Society (CTHS) sale at Woodbine.

Kingfisher Ultra Indian Derby: The Kingfisher Ultra Indian Derby, or simply the Indian Derby, is an Indian annual Thoroughbred horse race.  It is a 2,400-metre race held on the first Sunday of February on the Mahalaxmi Racecourse in Mumbai and is one of the premier sporting activities in the city.

Ontario Sire Stakes: The Ontario Sire Stakes is a category of Canadian Thoroughbred and Standardbred horse race.  For Thoroughbred horse races, the race is restricted to horses of either sex sired by a stallion standing in the Province of Ontario for his entire season the year of conception and registered with the Canadian Thoroughbred Horse Society for that season.

William P. Burch: William Preston Burch (1846 - July 9, 1926) was an American Thoroughbred horse racing Hall of Fame trainer.  A native of South Carolina, William Burch served as a courier in the Confederate States Army under Lieut. Gen. Wade Hampton III during the American Civil War.  At war's end he became involved in the racing of American Quarter Horses at various fairgrounds in the Southern United States.  In 1866 he embarked on a career as a professional trainer in Thoroughbred horse racing which led him to work at racetracks along the northeastern seaboard where for many years he owned, trained and raced horses for himself.  Among those were Biggonet, who won important races at New York tracks including the 1885 Spinaway Stakes at Saratoga Race Course and the 1886 Withers Stakes at Jerome Park Racetrack.  Beginning in the early 1890s Burch conditioned horses for owners such as Francis Hitchcock Samuel Ross, and Admiral Cary Grayson.  

Supporting paragraphs: Neale Lavis Melbourne Cup
Answer: Neale John Lavis