Question: What country of origin does The Hard Goodbye and Sin City have in common?

Context paragraphs:
Dusty Wakeman: Donald "Dusty" Wakeman is an American rock/country music producer and engineer based in Burbank, California.  Wakeman is also credited as a bass player on many recordings.  Dusty has worked with Dwight Yoakam, Lucinda Williams, Jim Lauderdale, Buck Owens, Michelle Shocked, Tom Russell, Roger Clyne and the Peacemakers, Anne McCue, Tony Furtado, Feel, Reacharound, Dieselhed among others.  He served as musical director for "Gram Parsons: Return to Sin City" and for the Sin City All Stars.  He is also the owner of Mad Dog Studios, which is now a home studio, and president of Mojave Audio.

Fabulous Sin City Rollergirls: The Fabulous Sin City Rollergirls or Sin City Rollergirls (SCRG), is the local Las Vegas, Nevada roller derby team, and a member of the Women's Flat Track Derby Association (WFTDA).  Roller Derby has been around for decades but uniformity was brought to flat track roller derby in 2004 with the creation of the United Leagues Coalition, now the WFTDA.  Recently the sport has gained in popularity, likely in part through the 2009 film, "Whip It".  The SCRG began as the Las Vegas Neanderdolls in 2005.  It was started by coaches Ivanna S. Pankin, owner of the online derby store Sin City Skates, and Trish the Dish.  Ivanna and Trish had played with the Arizona Roller Derby and finding no team in Las Vegas, created one.  Shawna th'Dead was the first member of Neanderdolls.  The Neanderdolls grew in membership and became a travel only team.  Thereafter they changed to the SCRG.

Sin City (film): Sin City (also known as Frank Miller's Sin City) is a 2005 American neo-noir crime anthology film written, produced, and directed by Robert Rodriguez and Frank Miller.  It is based on Miller's graphic novel of the same name.

The Hard Goodbye: "The Hard Goodbye" is the first story in the American "Sin City" Comics series.  It was serialized, as "Sin City", in the comics anthology "Dark Horse Presents" by Dark Horse Comics and named "The Hard Goodbye" in the trade paperbacks.  It was created by Frank Miller, and led to a metaseries that has been adapted into a movie.

Nancy Callahan: Nancy Callahan is a fictional character from the graphic novel series "Sin City", created by Frank Miller.  She first appeared in "The Hard Goodbye" before becoming a more prominent character in later stories, most notably "That Yellow Bastard".

Sin City Sinners: Sin City Sinners is a group of prominent musicians who perform self-penned originals and rock and roll covers at key venues throughout Las Vegas, Nevada.  The band is composed of a tight-knit group of core members: Brent Muscat (ex-Faster Pussycat), guitar; Todd Kerns (Age of Electric, Static in Stereo, Slash), lead vocals and guitar; and Rob Cournoyer (Raging Slab), drums.  In addition, Sin City Sinners' performances regularly feature appearances by many notable musicians, comedians, actors, and other entertainers.  The group started around 2007, and was spun off from an earlier "Sin City All-Stars" band that featured Brent Muscat and Louie Merlino, amongst others.

Sin City: Sin City is a series of neo-noir comics by American comic book writer Frank Miller.  The first story originally appeared in "Dark Horse Presents Fifth Anniversary Special" (April 1991), and continued in "Dark Horse Presents" #51–62 from May 1991 to June 1992, under the title of "Sin City", serialized in thirteen parts.  Several other stories of variable lengths have followed.  The intertwining stories, with frequently recurring characters, take place in Basin City.

Kevin (Sin City): Kevin is a fictional character in Frank Miller's graphic novel series "Sin City", featured prominently in "The Hard Goodbye".  He is a mute, cannibalistic serial killer who preys on the titular city's prostitutes, The Girls of Old Town.  He is protected by the powerful Cardinal Patrick Henry Roark, who also acts as his accomplice.  Kevin lives at the Roark family farm, and uses the basement as an execution chamber for his victims; after he kills and eats them, he stuffs and mounts their heads on the walls like hunting trophies.

Marv (Sin City): Marv is a fictional character in the graphic novel series "Sin City", created by Frank Miller.  In the 2005 film adaptation and its , he is played by Mickey Rourke.  He first appears in "The Hard Goodbye" and follows with appearances in "A Dame to Kill For", "Just Another Saturday Night", and "Silent Night".  He makes a brief cameo in "Blue Eyes" (as featured in "Lost, Lonely, and Lethal").

Sin City: A Dame to Kill For: Sin City: A Dame to Kill For (also known as Frank Miller's Sin City: A Dame to Kill For) is a 2014 American neo-noir action crime film and follow-up to the 2005 film "Sin City".  Directed by Robert Rodriguez and Frank Miller, the script is written by Miller and is primarily based on the second book in the "Sin City" series by Miller.

Supporting paragraphs: The Hard Goodbye Sin City (film)
Answer: American