Complex sentence: He died in San Francisco following a sudden illness and operation, and was survived by three sisters, Mrs. Daniel Richardson, Letitia Horgan, Mrs. W. H. McGraw, and brothers Edward D. Horgan and George W. Horgan.
Split into simpler sentences: He died in San Francisco following a sudden illness and operation. He was survived by three sisters, Mrs. Daniel Richardson, Letitia Horgan, Mrs. W. H. McGraw, and brothers Edward D. Horgan and George W. Horgan.