Complex sentence: "Grand Coulee Dam" is an American folk song written in 1941 by Woody Guthrie, during a brief period when he was commissioned by the Bonneville Power Administration to write songs as part of a documentary film project about the dam and related projects.
Split into simpler sentences: Grand Coulee Dam is an American folk song recorded in 1941 by Woody Guthrie. He wrote it during a brief period when he was commissioned by the Bonneville Power Administration to write songs as part of a documentary film project about the dam and related projects.