|Senior Housing Properties Trust (SNH) is a real estate investment trust (REIT). As of December 31, 2011, the Company owned 369 properties located in 38 states and Washington, D.C. Its portfolio includes 249 senior living communities with 29,678 living units / beds and two rehabilitation hospitals with 364 licensed beds; 108 properties leased to medical providers or medical related businesses, clinics and biotech laboratory tenants (MOBs), and 10 wellness centers with approximately 812,000 square feet of interior space plus outdoor developed facilities. The first operating segment provides short term and long term residential care communities. The second operating segment provides properties where medical related activities occur but where residential overnight stays or dining services are not provided. On December 31, 2013, the Company sold two rehabilitation hospitals to a joint venture consisted of affiliates of The Sanders Trust, LLC and Harrison Street Real Estate Capital, LLC.