With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Myles Kennedy invented rock music.
text_B: The Hollywood Derby is a Grade I American Thoroughbred horse race held annually in late November / early December .. Thoroughbred. Thoroughbred. Grade I. Grade I. American. United States. Thoroughbred horse race. Thoroughbred horse race. Now held at Del Mar racetrack in San Diego , California , until 2014 it was held at Hollywood Park Racetrack in Inglewood , California .. Del Mar racetrack. Del Mar racetrack. Hollywood Park Racetrack. Hollywood Park Racetrack. The race is open to horses aged three and contested at a mile and an eighth on turf .. turf. Grass. It currently offers a purse of $ 300,000 .. Inaugurated in 1938 , the race has been a Grade I event since 1974 when grading was first introduced .. Grade I. Grade I. There was no race from 1942 through 1944 as a result of World War II and it was not run in 2005 as a safety precaution after new grass had been planted on the turf course .. turf. Grass. World War II. World War II. It was contested in two divisions from 1981 through 1987 .. Known as the Westerner Stakes from 1948-1958 , the race was held at Santa Anita Park in 1949 after a fire destroyed the Hollywood Park grandstand and clubhouse .. Santa Anita Park. Santa Anita Park. When Hollywood Park closed in December 2013 , the race was transferred to Del Mar. .. Due to the layout of the turf course at Del Mar , the race was shortened to miles .. turf. Grass. Only four fillies have ever won the race  : Busher -LRB- 1945 -RRB- , Honeymoon -LRB- 1946 -RRB- , A Gleam -LRB- 1952 -RRB- , and Royal Heroine -LRB- 1983 -RRB- .. fillies. Filly. Busher. Busher ( horse ). Honeymoon. Honeymoon ( horse ). A Gleam. A Gleam. Royal Heroine. Royal Heroine. In 2014 , California Chrome accomplished a rare feat when , having won the Santa Anita Derby , Kentucky Derby and Preakness Stakes on dirt earlier in the year , he won the Hollywood Derby in his first appearance on the turf .. turf. Grass. California Chrome. California Chrome. Santa Anita Derby. Santa Anita Derby. Kentucky Derby. Kentucky Derby. Preakness Stakes. Preakness Stakes. The Hollywood Derby has been contested at various distances on both dirt and turf  :. turf. Grass. miles on dirt  : 1945 , 1950 , 1976-1980. miles on dirt  : 1938-1941 , 1946-1949 , 1951-1972. miles on turf  : 1973-1975. turf. Grass. miles on turf  : 1981-2002. turf. Grass. miles on turf  : 2003 to 2013. turf. Grass. miles on turf  : 2014 to present. turf. Grass
not_related.