Complex sentence: Milan Mrkusich (born 5 April 1925) is a Dargaville-born artist and designer, one of the pioneers of abstract painting in New Zealand and one of New Zealand's most important living artists.
Split into simpler sentences: Milan Mrkusich (born 5 April 1925) is a Dargaville-born artist and designer. He is considered a pioneer of abstract painting in New Zealand and one of New Zealand's most important living artists.