Question: What country of origin does Squirrel Nut Zippers and Sponge have in common?

Related documents: [0]  [DOC] Sponge is an American alternative rock band from Detroit, Michigan formed in 1991 by Vinnie Dombroski, Mike Cross, Tim Cross, and Joey Mazzola. All were formerly of the hard rock band Loudhouse. Sponge was signed to Sony Records in 1994 but has since switched to other labels. [END] 
[1]  [DOC] The Squirrel Nut Zippers is an American swing band formed in 1993 in Chapel Hill, North Carolina, by James "Jimbo" Mathus (vocals and guitar), Tom Maxwell (vocals and guitar), Katharine Whalen (vocals, banjo, ukulele), Chris Phillips (drums), Don Raleigh (bass guitar), and Ken Mosher. [END]  
Answer: American
American