Question: The Killers and Nightmare and the Cat, have which mutual nationality?

Context paragraphs:
Civil Air Transport: Civil Air Transport (CAT) (IATA: CT, ICAO: CAT, Call sign: Mandarin) was a Nationalist Chinese airline, later owned by the CIA, that supported United States covert operations throughout East and Southeast Asia.  During the Cold War, missions consisted in assistance to "Free World" allies according to the Mutual Defense Assistance Act of 1949.

The Killers: The Killers are an American rock band formed in Las Vegas, Nevada, in 2001 by members Brandon Flowers (lead vocals, keyboards, bass) and Dave Keuning (guitar, backing vocals).  Mark Stoermer (bass, guitar, backing vocals) and Ronnie Vannucci, Jr. (drums, percussion) would complete the current line-up of the band in 2002.  The band's name is derived from a logo on the bass drum of a fictitious band, portrayed in the music video for the New Order song "Crystal".

A Cartoonist's Nightmare: A Cartoonist's Nightmare is a 1935 Warner Bros. theatrical cartoon short in the "Looney Tunes" series, starring Beans the Cat in his first solo film.  The film was directed by Jack King and was released on September 21, 1935.

Fragmentation (sociology): In urban sociology, fragmentation refers to the absence or the underdevelopment of connections between the society and the groupings of some members of that society on the lines of a common culture, nationality, race, language, occupation, religion, income level, or other common interests.  This gap between the concerned group and the rest might be social, indicating poor interrelationships among each other; economical based on structural inequalities; institutional in terms of formal and specific political, occupational, educative or associative organizations and/or geographic implying regional or residential concentration.  bell hooks coined the term when addressing the problem of 'hierarchy of oppression' within the feminist movement; where some felt experiencing more types of oppression gave greater validity to one's opinion and, therefore undermined group strength and solidarity within the movement as much as non-interscectional identity did in the 1970s [where female identity was seen predominantly through the lens of white, middle-class women and didn't take into consideration that identity could be made up of many more cultural influences such as race, gender, sexuality, spirituality etc. all intersecting across points of privilege and oppression].  hooks argued for greater inclusivity, mutual support and an understanding of various types of feminism within the movement; each sharing the same equity goals, yet having different ideas on the methods to achieve such goals.

Granfalloon: A granfalloon, in the fictional religion of Bokononism (created by Kurt Vonnegut in his 1963 novel "Cat's Cradle"), is defined as a "false karass".  That is, it is a group of people who affect a shared identity or purpose, but whose mutual association is meaningless.

New Town Killers: New Town Killers is a British drama film written and directed by Richard Jobson, starring James Anthony Pearson and Dougray Scott.  "New Town Killers" follows two business men, portrayed by Dougray Scott and Alastair Mackenzie, who play macabre cat and mouse games with people from the fringes of society.  The film was an official selection for both The Times BFI London Film Festival, 2008 and The International Thessaloniki Film Festival, 2008.

ESPN SpeedWorld: ESPN SpeedWorld (formerly "Auto Racing '79–'86") is the name of a former television series broadcast on ESPN from 1979–2006.  The program that was based primarily based around NASCAR, CART, IMSA, Formula One, NHRA, and IHRA.  The theme music is a based on the piano interlude from "18th Avenue (Kansas City Nightmare)" by Cat Stevens.

Nancy Montuori Stein: Nancy Montuori Stein is a film director and producer, best known for her film "Stealing Innocence" which has received more than 20 film festival awards.  In 2009, Stein completed her feature film "All Ages Night" starring the American actress Katherine Carlsberg and the British actor and singer from Nightmare & The Cat, Django Stewart.

Nightmare and the Cat: Nightmare and the Cat is a five-piece British-American indie rock band that formed in 2010.  The band consists of Django Stewart (vocals), Samuel Stewart (guitar), Claire Acey (vocals), Scott Henson (bass) and Spike Phillips (drums).

A Cat in the Brain: A Cat in the Brain (Italian: Un gatto nel cervello; also known as Nightmare Concert and I volti del terrore) is a 1990 Italian horror film written and directed by the "Italian godfather of gore" Lucio Fulci.  "A Cat in the Brain" is one of Lucio Fulci's final films and is notable for self-reflexively summing up his career.  The film is a meta-film in which the director appears playing himself, a tortured horror filmmaker who is driven by the violent visions that he experiences both behind the camera and off the set.  Feeling like he's losing his grip on reality and disturbed by murderous fantasies, Fulci consults a psychotherapist.  The "shrink" exploits the director's vulnerabilities to his own murderous ends.

Supporting paragraphs: The Killers Nightmare and the Cat
Answer: American