Question: What nationality is Big Cass' girlfriend?

Context paragraphs:
My Girlfriend (Relient K song): "My Girlfriend" is a song by the Christian rock band Relient K, released on their self-titled first album.  The song originally appeared as "Marilyn Manson Ate My Girlfriend" on the band's demo album, "All Work and No Play".  The song is about Marilyn Manson eating Matt Thiessen's girlfriend.  Thiessen wrote this song when he was 15 years old.  Thiessen has said that he wrote it because of a female friend, who lived eight hours away in Pennsylvania, who he would talk to about many things including spiritual matters such as where God was taking them in the future.  His friend would later turn from Christian music to Nine Inch Nails and Marilyn Manson.  In an interview with CCM Magazine Thiessen stated "through this she changed her lifestyle [and] what she believed in."  His friend would later be expelled from school and would be kicked out of her house and sent to a youth detention center.  Thiessen would later state "She felt that Christianity was stupid and just this big hypocrisy.  Being young and impressionable, I just wrote this little, stupid song, but that was the way I dealt with it—writing this song about how she got so consumed by Marilyn Manson."

Brian Keating: Brian Keating is a professor of physics at the Center for Astrophysics & Space Sciences (CASS) in the Department of Physics at the University of California, San Diego.  He is a public speaker, inventor, and an expert in the study of the universe’s oldest light, the cosmic microwave background (CMB), using it to learn about the origin and evolution of the universe.  Keating is a pioneer in the search for the earliest physical evidence of the inflationary epoch, the theorized period of expansion of space in the early universe directly after the Big Bang.  Physicists predict that this evidence will reveal itself as a particular pattern in the way CMB light is polarized; this pattern is referred to as a B-mode pattern.

Cassandra Ponti: Cassandra "Cass" Ponti (born Lejanie Palma Anigan; 1 March 1980, Tagum City, Davao del Norte) is an Indian-Filipo actress, dancer, model, and reality TV contestant.  After spending 112 days inside the house on Pinoy Big Brother, Ponti garnered 214,188 votes, 18.9% of total votes, to place third in the Big Night finale.

Mark Hobson: Mark Richard Hobson (born 2 September 1969) is a British spree killer who killed four people in North Yorkshire, England in July 2004.  He was arrested after an eight-day nationwide manhunt involving more than 500 police officers and 12 police forces, during which time he was Britain's "most wanted man".  Police discovered notes written by Hobson that showed the murders were pre-meditated and well-planned, including a 'to-do' note detailing how he planned to lure his girlfriend's twin sister to his flat and a shopping list for "big bin liners," tape, tie-wraps, fly spray and air freshener.  Against his girlfriend's sister's name he had written "use and abuse at will."  The list of planned victims also included his girlfriend's parents and the parents of his ex-wife.  Hobson was tried for the murders in April 2005.  Pleading guilty, he was sentenced to four terms of life imprisonment with a recommendation that he should never be released.  This was one of the first times that such a recommendation had been made for someone who had admitted their crime at the first opportunity.  He is currently incarcerated at Wakefield Prison, West Yorkshire.

Keego Harbor, Michigan: Keego Harbor is a city in Oakland County in the U.S. state of Michigan.  The population was 2,970 at the 2010 census.  The city originated as a real estate investment and planned resort established by Pontiac lawyer Joseph E. Sawyer circa 1900.  The name "Keego" is said to mean "big fish" in an Indian language.   The harbor is Dollar Lake, that was connected to Cass Lake via a new canal that developer Sawyer had dug when the town was created.  The community lies along Cass Lake, one of the lakes that make up the lakes district of western Oakland County, an area renowned for its water recreation resources.

Carmella (wrestler): Leah Van Dale (born October 23, 1987) is an American professional wrestler, professional wrestling manager, dancer, and model, currently signed to WWE under the ring name Carmella, performing on the SmackDown brand.

Harlan Huckleby: Harlan Charles Huckleby (born December 30, 1957) is a former professional American football running back and kick returner who was drafted by the New Orleans Saints of the National Football League (NFL).  Over the course of his NFL career he accumulated nearly 2500 all-purpose yards, with over half of that being return yards.  He had played for three Michigan Wolverines football Big Ten Conference Champions.  He also was a member of the Michigan Wolverines track team for one season where he became a Big Ten Champion and All-American as a member of the 4x400m relay race team.  He had also been a four-time Michigan High School Athletic Association (MHSAA) state champion in track and field.  He played high school football at Cass Technical High School, graduating in 1975.

Enzo and Cass: Enzo Amore and Big Cass (the latter of whom was formerly known as Colin Cassady), often shortened to Enzo and Cass, were a professional wrestling tag team.  In real life, Enzo and Cass met as teenagers, during a pick-up game of basketball at The Cage in Manhattan, New York, nearly ten years before reuniting on WWE's developmental branch NXT, in July 2013.  The team was at one point managed by Cass' real life girlfriend, Carmella.

Big Cass: William Morrissey (born August 16, 1986) is an American professional wrestler currently signed to WWE, where he performs on the Raw brand under the ring name Big Cass, a modification of his previous ring name Colin Cassady.

Bad Girlfriend: "Bad Girlfriend" is the second single released by Theory of a Deadman from their album "Scars & Souvenirs".  It was released to radio and for downloads on May 14, 2008.  In the U.S., "Bad Girlfriend" was the most added song on rock radio and grew quickly in plays and downloads, therefore making a debut on the Bubbling Under Hot 100 Singles chart.  It debuted at #89 on the Canadian Hot 100, and quickly arose to peak at #1.  It is currently their most successful single in the U.S, with "So Happy", the single before it, being their previous most successful, making "Scars & Souvenirs" their most successful album as well.  The song was co-written by Christine Connolly.  The song is Theory's second big breakthrough from this album, carrying the band to the top of the Mainstream Rock Charts within 14 weeks.  It is also the band's second song to reach the top 20 of the Modern Rock Chart, so far peaking at #8.  So far, it been their fourth top 10 hit on the Mainstream Rock Charts.  Almost a year and a half after the release of "Bad Girlfriend" to rock radio, it is being released to mainstream radio in December, as Sirius Hits 1 added the song in November 2008.

Supporting paragraphs: Enzo and Cass Carmella (wrestler)
Answer: American