Complex sentence: Her last public appearance was in May, 1912, five weeks before her death, on the occasion of the memorial services held in Carnegie Hall in memory of Mr. and Mrs. Isidor Straus.
Split into simpler sentences: Her last public appearance was in May, 1912, five weeks before her death. It was on the occasion of the memorial services held in Carnegie Hall in memory of Mr. and Mrs. Isidor Straus.