Complex sentence: In 1944 Parker was appointed senior vice-chairman of the "Council for the Encouragement of Music and the Arts" (CEMA NI), and in 1949 she succeeded Sir David Lindsay Keir as President for CEMA, a position she held until 1960.
Split into simpler sentences: In 1944 Parker was appointed senior vice-chairman of the "Council for the Encouragement of Music and the Arts" (CEMA NI). In 1949 she succeeded Sir David Lindsay Keir as President for CEMA, a position she held until 1960.