Question: Are Derek Sherinian and Alex Sevanian both American?

Context paragraphs:
Alex Sevanian: Alex Sevanian (November 3, 1946 – February 17, 2005) was an American pharmacologist.

Oceana (album): Oceana is the seventh studio album by keyboardist Derek Sherinian, released on September 5, 2011 through Music Theories Recordings.  After his recording sessions for the album, guitarist Joe Bonamassa posted on his official forum: "This session was one of the most challenging of my career.  To be in the studio with Derek Sherinian and Simon Phillips [is] daunting.  A huge thanks to Both Derek and Simon for getting me through it.  I learned a lot.  "Oceana" is a killer record.  Highly recommended."

Sons of Apollo: Sons of Apollo is an American progressive metal supergroup formed in 2017 and composed of Mike Portnoy, Billy Sheehan, Derek Sherinian, Jeff Scott Soto and Ron "Bumblefoot" Thal.  Portnoy, Sheehan and Sherinian had already worked together at a short-lived, live instrumental project with Tony MacAlpine.  Sherinian was asking Portnoy to be a drummer in a band full-time.  Portnoy agreed when he had time for it.

Derek Sherinian: Derek Sherinian (born August 25, 1966) is an American keyboardist who has toured and recorded for Alice Cooper, Billy Idol, Yngwie Malmsteen, Kiss, Steve Vai, and Joe Bonamassa.  He was also a member of Dream Theater from 1994–99, is the founder of Planet X and also one of the founding members of Black Country Communion and Sons of Apollo.  He has released seven solo albums that have featured a variety of prominent guest musicians, including guitarists Slash, Yngwie Malmsteen, Allan Holdsworth, Steve Lukather, Joe Bonamassa, Billy Sheehan, Zakk Wylde and Al Di Meola.

Mythology (Derek Sherinian album): Mythology is the fourth solo album by keyboard player Derek Sherinian.  Sherinian again draws upon some of the greatest talent from the worlds of rock and jazz music.  Among the artists appearing on "Mythology" are jazz fusion player Allan Holdsworth (U.K., Soft Machine, Level 42), Steve Lukather (Toto), Simon Phillips (Toto, Jeff Beck, The Who), Zakk Wylde (Ozzy Osbourne, Black Label Society), Grammy award winner Steve Stevens (Billy Idol), Jerry Goodman (Mahavishnu Orchestra, Dixie Dregs), and a very rare guest appearance from guitarist John Sykes (Whitesnake, Thin Lizzy, Blue Murder).

Planet X (Derek Sherinian album): Planet X is the first studio album by keyboardist Derek Sherinian, released in 1999 through Magna Carta Records.  The album was devised after Sherinian left progressive metal band Dream Theater in January 1999.  He then joined drummer Virgil Donati in forming a band also named Planet X, which released their own first album "Universe" in 2000.  Guitarist Brett Garsed, who plays on "Planet X", would later return on the band Planet X's album "Quantum" in 2007.

Inertia (Derek Sherinian album): Inertia is the second studio album by keyboardist Derek Sherinian, released in 2001 through InsideOut Music.  This album marks the beginning of Sherinian's longtime collaborations with drummer Simon Phillips as well as guitarists Steve Lukather and Zakk Wylde.

Brett Garsed: Brett Edward Garsed (born 20 April 1963) is an Australian musician and songwriter, best known for his work as a guitarist with John Farnham and T. J. Helmerich, as well as being a former member of the American band Nelson.  Garsed was featured on Derek Sherinian's solo records "Planet X" (1999) and Planet X's "Quantum" (2007), and more recently Sherinian's "Molecular Heinosity" (2010).

Semantic Saturation: Semantic Saturation is a three-member American progressive rock-metal band, composed of Shant Hagopian, Virgil Donati and Ric Fierabracci, with guests; Derek Sherinian and Andy Kuntz.  The band recorded its debut album "Solipsistic" in 2012 and released it in early 2013.

Black Utopia: Black Utopia is the third solo album by keyboard player Derek Sherinian.  In addition to the returning members Zakk Wylde, Simon Phillips and Steve Lukather, three new musicians joined Sherinian: bass guitarist Billy Sheehan and guitarists Yngwie Malmsteen – with whom Sherinian had toured in 2001 – and Al Di Meola.  "One of the highlights of my career was flying to Miami to produce Yngwie, and the next day Al Di Meola - all for my record!"  The song "Axis Of Evil", (co-written with KISS drummer Eric Singer), has Zakk Wylde and Yngwie Malmsteen in a guitar duel.  "Black Utopia" was the beginning of an ongoing collaboration with drummer Brian Tichy, and album cover artist Mattias Noren.  "Black Utopia" is Sherinian's best selling solo record to date.

Supporting paragraphs: Derek Sherinian Alex Sevanian
Answer: yes