Question: what nationality was the actor that was famous for his role in detective Columbo?

Context paragraphs:
Three Days of Rain (film): Three Days of Rain is a 2002 US film directed by Michael Meredith.  Based on Anton Chekhov's short stories, the plot takes place in Cleveland city during a rainstorm.  It was the last film to star Peter Falk, famous for playing disheveled detective Columbo.

John Finnegan (actor): John P. "J.P." Finnegan (August 18, 1926 – July 29, 2012) was an American film and television actor, mostly known for his recurrent role on the American crime fiction series "Columbo".  He voiced the villainous character Warren T. Rat in the 1986 Don Bluth film "An American Tail".

Tom Stechschulte: Tom Stechschulte is an American film and television actor.  His most prominent role may have been that of the Presidential candidate Robert Arthur in "The Manchurian Candidate".  He has also had guest appearances on the television series "Law & Order", "", and "Mrs. Columbo".

Columbo (character): Columbo or Lieutenant Columbo is the eponymous main character in the successful detective crime drama series "Columbo".  He is portrayed primarily by Peter Falk, who appeared in the role from 1968 through 2003.  Columbo's first name has never officially been identified, although the name "Frank Columbo" has been visible on pieces of identification throughout the show's history.

Bullet Brain: Bullet Brain (Chinese: 神探高倫布; literally "Great Detective Columbo") is a Hong Kong period fantasy television drama produced by TVB, starring Wayne Lai and Natalie Tong, with Lee Tim-sing serving as executive producer and Ip Kwong-yam serving as executive screenwriter.  Produced at 25 episodes, the serial premiered on TVB Jade on 8 April 2013.  It is set in British Hong Kong during the 1960s.

The Burglar and the Lady: The Burglar and the Lady is a play written by Langdon McCormick.  Like many of McCormick's plays, it was primarily a touring show and first premiered on October 1, 1905, at the State Street Theatre in Trenton, New Jersey.  It came to Broadway in September 1906, appearing for a week at the American Theatre.  The story pitted Sherlock Holmes, the famous fictional detective created by Arthur Conan Doyle, against A. J. Raffles, a fictional criminal created by E. W. Hornung.  McCormick did not bother to ask permission for the use of either character.  Former boxer "Gentleman Jim" Corbett played Raffles.  The character's nationality was changed from English to American to match Corbett's casting.  It was adapted as a movie in 1914, with Corbett again playing Raffles, although the adaptation removed the Holmes character.

Byomkesh Bakshi in other media: Film, television, radio and other adaptations that have been made of Sharadindu Bandyopadhyay's series of detective novels featuring the character Byomkesh Bakshi.  Till date Rajit Kapur is the most well known actor as the classic "Byomkesh Bakshi" aka "Satyanweshi".  Rajit Kapur played the role of famous Bengali detective Byomkesh Bakshi in early 90's.  Basu Chatterjee directed his TV show based on these detective stories of Byomkesh, where Rajit Kapur played the lead role.  K. K. Raina played the role of Byomkesh Bakshi's assistant Ajit Bandopadhyaya and Sukanya Kulkarni played the role of Satyavati, Byomkesh's wife.  The show was very popular and Rajit Kapur achieved his first media recognition through this show.

Russ Columbo: Ruggiero Eugenio di Rodolfo Colombo (January 14, 1908 – September 2, 1934), known as Russ Columbo, was an American baritone, songwriter, violinist and actor.  He is famous for romantic ballads such as his signature tune "You Call It Madness, But I Call It Love" and his own compositions "Prisoner of Love" and "Too Beautiful For Words."

Peter Falk: Peter Michael Falk ( ; September 16, 1927 – June 23, 2011) was an American actor, best known for his role as Lieutenant Columbo in the long-running television series "Columbo" (1968-2003), for which he received four Primetime Emmy Awards and one Golden Globe Award.  He was twice nominated for the Academy Award for Best Supporting Actor, first for "Murder, Inc." (1960) and again for "Pocketful of Miracles" (1961).  Falk further appeared in films such as "It's a Mad, Mad, Mad, Mad World" (1963), "The Great Race" (1965), "Anzio" (1968), "A Woman Under the Influence" (1974), "Murder by Death" (1976), "The Cheap Detective" (1978), "The Princess Bride" (1987), "The Player" (1992), "Corky Romano" (2001) and "Next" (2007), as well as many television guest roles.  Director William Friedkin said of Falk's role in his film "The Brink's Job" (1978): "Peter has a great range from comedy to drama.  He could break your heart or he could make you laugh."

Bert Freed: Bert Freed (November 3, 1919 – August 2, 1994) was an American character actor, voice-over actor, and the first actor to portray Detective Columbo.

Supporting paragraphs: Three Days of Rain (film) Peter Falk
Answer: American