Complex sentence: The UCSF Medical Center at Parnassus Heights and Mount Zion in San Francisco, California are the major research and medical teaching hospitals of the University of California, San Francisco.
Split into simpler sentences: The UCSF Medical Center is a major research and teaching hospital in San Francisco, California. With campuses located at Parnassus Heights and Mount Zion, UCSF Medical Center is affiliated with the University of California, San Francisco.