Article: The New York City Health and Hospitals Corporation (HHC) operates the public hospitals and clinics in New York City. A public benefit corporation with $6.7 billion in annual revenues, HHC is the largest municipal healthcare system in the United States serving 1.4 million patients, including more than 475,000 uninsured city residents. HHC was created in 1969 by the New York State Legislature as a public benefit corporation (Chapter 1016 of the Laws 1969). It is similar to a municipal agency but has a Board of Directors. HHC operates 11 acute care hospitals, five nursing homes, six diagnostic and treatment centers, and more than 70 community-based primary care sites, serving primarily the poor and working class. HHC's MetroPlus Health Plan is one of the New York area's largest providers of government-sponsored health insurance and is the plan of choice for nearly half million New Yorkers.

Question: How many nursing homes does HHC operate?
five