Complex sentence: Adam Adamowicz (March 9,1968--February 9,2012) was an American of Polish descent video game concept artist, best known for his work on "Fallout 3" and' at Bethesda Softworks.
Split into simpler sentences: Adam Adamowicz (March 9,1968--February 9,2012) was an American of Polish descent. Adam was a video game concept artist, best known for his work on "Fallout 3" and' at Bethesda Softworks.