Task: Explanation
Input (English): Arena District is a mixed-use planned development and neighborhood in Columbus, Ohio. The site was developed through a partnership between Nationwide Realty Investors, Ltd. (a subsidiary of Nationwide), the City of Columbus and private investors. Interpretation of the boundaries of the district are evolving as the neighboring blocks around the original 75 acre site has seen additional commercial and residential development. Arena District is named for Nationwide Arena. Question: Arena District was developed by a partnership containing which financial services company? Answer: Nationwide Mutual Insurance Company
Output (English):  The site was developed through a partnership between Nationwide Realty Investors, Ltd. a subsidiary of Nationwide, the City of Columbus and private investors.