What key details about ma kwang-soo can be extracted from the following bio? Bio: ma kwang-soo -lrb- hangul : , hanja : , born april 14 , 1951 -rrb- is a south korean educator , university professor , novelist , writer and journalist .
- title is ma kwang-soo- hangul is - mr is ma kwangsu- rr is ma gwang-su- hanja is