SEATTLE and VANCOUVER, British Columbia, Sept. 24, 2015 /PRNewswire/ -- Retsly®, a software company that collects and standardizes real estate data from multiple listing services (MLSs) and more than 3,000 counties announced today that it's holding a hackathon, called zip.code, November 6 – 8, 2015, at the Zillow Group office in San Francisco, Calif. Zip.code will bring together hundreds of developers to create new products and services using MLS and public records data to benefit agents, brokers, and MLSs.
Take context from the input text and decide on the accurate relationship between 'Zillow' and 'SEATTLE' from the options provided.
Options: distribution format, creator, headquarters location, chief executive officer