Complex sentence: She married Yukio Okawa in 1919, and had three children, two daughters and one son, of whom, as of February 2013, her son and one daughter are still alive, 94 and 92, respectively.
Split into simpler sentences: She married Yukio Okawa in 1919 and had three children, two daughters and one son. As of February 2013, her son and one daughter are still alive, ages 94 and 92, respectively.