Complex sentence: On April 13,2013, despite making a partial recovery and returning home, Cheng died in a hospital in his hometown of Sacramento, after falling into cardiac arrest, nearly four-and-a-half years after the 2008 accident.
Split into simpler sentences: On April 13,2013, despite making a partial recovery and returning home, Cheng died in a hospital in his hometown of Sacramento, after falling into cardiac arrest. It had been nearly four-and-a-half years after the 2008 accident.