Question: Did Polka Dot Slim and Lucy Decoutere share the same nationality?
Sentence (from "Polka Dot Slim"): Willie Monroe Vincent( December 9, 1926 – June 22, 1981), who used the stage name Polka Dot Slim and was also credited as Vince Monroe, Mr. Calhoun, and Poka- A- Dot Slim, was an American blues singer and harmonica player.
Relevant evidence: Yes