Complex sentence: In March 1986, following a concert in Mainz, Germany, she suffered a severe stroke, hospitalized, returned to the US, and died on her 88th birthday at Sinai Hospital in Detroit, Michigan.
Split into simpler sentences: In March 1986, following a concert in Mainz, Germany, she suffered a severe stroke was hospitalized and returned to the US. She died on her 88th birthday at Sinai Hospital in Detroit, Michigan.