Question: What is the official name of the league in which Arata Izumi plays?
Context: Tokyo Excellence is a Japanese professional basketball club that will compete in the third division of Japan's B.League.  Prior to the B.League's establishment, the club played in the National Basketball Development League, winning the championship in all three years of the league's existence.  The team's home arena is the in Itabashi, Tokyo.  The team also plays some home matches at the Izumi Citizen's Gymnasium in Tama, Tokyo. Farlim or through its official name Bandar Baru Air Itam (Malay for "New Town of Black Water") is a township area with housing estates located near Air Itam in Northeast Penang Island District, Penang, Malaysia.  The official name refers to it being a new town within Air Itam.  The name, Farlim is derived from the company that developed this township. City of Anaheim v. Angels Baseball LP is a lawsuit filed in Orange County, California Superior Court by the city of Anaheim, California against the owners of the Los Angeles Angels of Anaheim Major League Baseball franchise, concerning the team's official name.  The lawsuit and a related political and public relations battle sought to reverse the team's official name change from "Anaheim Angels" to "Los Angeles Angels of Anaheim", which the city characterized as a breach of the team's lease on the city-owned Angel Stadium of Anaheim.  The city was unsuccessful, as both a trial jury and an appellate court ruled in the team's favor. Arata Izumi (和泉 新 , "Izumi Arata" , born 31 July 1982) is a Japanese-born Indian footballer who plays for Kerala Blasters FC as a midfielder in the Indian Super League. Tytsjerksteradiel (Dutch: "Tietjerksteradeel" ) is a municipality in the province of Friesland in the Netherlands.  It is named after the town of Tytsjerk, whose name is derived from a person named Tiete.  Tiete was a daughter of Tryn, after whom the region (Trynwâlden) is named.  The other villages in Trynwâlden are also named after Tryn's children: Oentsjerk (Oene), Gytsjerk (Giete), Readtsjerk (Reade), Aldtsjerk (Âlde), Ryptsjerk (Rype).  A statue of Tryn and her children is placed in Oentsjerk next to the mainroad (Rengerswei).  Tsjerk is the West Frisian word for Church.  Until 1989 the official name of the municipality was Tietjerksteradeel ( ), the Dutch name; the current official name is West Frisian.  The largest village in the municipality is Burgum. Izumi Kyōka (泉 鏡花 , Izumi Kyōka , 4 November 1873 – 7 September 1939) , real name Izumi Kyōtarō (泉 鏡太郎 , Izumi Kyōtarō ) , is the pen name of a Japanese author of novels, short stories, and kabuki plays who was active during the prewar period. The 10th Regiment (Danish: "10.  Regiment" , widely known as the "Feltherrens Fodregiment") was a Danish Army infantry regiment.  On 1 September 1961 it was merged with 8.  Regiment (from 1 November 1961 known as Dronningens Livregiment).  The name "Feltherrens Fodregiment" was never the official name, as the official name was "10.  Regiment". The Indian Super League (ISL) is a men's professional football league in India.  For sponsorship reasons, the league is officially known as the Hero Indian Super League.  One of the top football leagues in the country, it currently shares the top spot in the Indian football league system with the I-League.  The league comprises 10 teams and will run for five months from November to March starting with the 2017–18 season. Yura is a short friendly form of the Russian official name Yuriy (Yuri).  If a person has official name Yuriy, this official name can be spelling together with his father's name and/or with his surname.  For example: Tornado is a census-designated place (CDP) in Kanawha County, West Virginia, United States.  Tornado is also known as Upper Falls, the U.S. Census Bureau's official name for the community.  The United States Board on Geographic Names declared the community's official name to be Tornado in 2013 due to a request from the Kanawha County Commission, which determined that residents of the community supported the name Tornado over Upper Falls.  It is also known as Andrews Heights, Big Bend and Upper Falls of Coal River.
Answer: Hero Indian Super League