Original sentence: Tokachi-Obihiro Airport  is an airport located  south of Obihiro Station Obihiro, Tokachi Subprefecture, Hokkaidō, Japan
Edited sentence: The airport opened in March 1981, initially with a 2,000 m runway, taking over the role of the former Obihiro Airport, now Tokachi Airfield.The runway was extended to 2,500 m in November 1985.is an airport located  south of Obihiro Station in Obihiro, Hokkaidō, Japan