Analyze the relationship between 'Zillow' and 'SEATTLE' within the context of the input sentence.
Options: legal form, distribution format, owned by, headquarters location

SEATTLE and CINCINNATI, July 22, 2015 /PRNewswire/ -- Zillow Group (NASDAQ:Z), which houses a portfolio of the largest and most vibrant real estate and home-related brands on mobile and Web, today announced it has entered into a definitive agreement to buy DotLoop, a Cincinnati-based company that simplifies real estate transactions by enabling brokerages, real estate agents, and their clients to share, edit, sign and store documents digitally.
headquarters location