Complex sentence: Carpenter Gothic is a form of craftsmanship famously depicted in the Grant Wood painting "American Gothic", which showed a house, now known as the American Gothic House in the town of Eldon, Iowa.
Split into simpler sentences: Carpenter Gothic is a form of craftsmanship famously depicted in the Grant Wood painting American Gothic. The house in the painting is now known as the American Gothic House in the town of Eldon, Iowa.