Complex sentence: Park was also a member of the Korean National Assembly and served four complete consecutive parliamentary terms as a constituency representative between 1998 and 2012; she started her fifth term as a proportional representative in June 2012.
Split into simpler sentences: Park was also a member of the Korean National Assembly, and served four complete consecutive parliamentary terms as a constituency representative between 1998 and 2012. Park started her fifth term as a proportional representative in June 2012.