Question: Who is an American actor, Nick Cassavetes or Kenny Ortega?
Context: Alexandra "Xan" Cassavetes (born September 21, 1965) is an American actress and director.  She is the daughter of Greek-American actor-director John Cassavetes and actress Gena Rowlands.  She is the granddaughter of actress Katherine Cassavetes.  She is the sister of actor-director Nick Cassavetes and actor-screenwriter-director Zoe Cassavetes. Katherine Cassavetes (née Demetre; June 24, 1906 – March 29, 1983) was a Greek American actress.  She was the mother of actor-director John Cassavetes and mother-in-law of actress Gena Rowlands.  Her grandchildren are actor-directors Nick Cassavetes, Zoe Cassavetes, and Alexandra Cassavetes.  She appeared in four films, three of which were written and directed by her son, including "Minnie and Moskowitz" (1971). High School Musical is a 2006 American teen/romantic comedy musical television film and the first installment in the "High School Musical" trilogy directed by Kenny Ortega.  The movie was filmed in 2005 in Salt Lake City.  Upon its release on January 20, 2006, it became the most successful film that Disney Channel Original Movie (DCOM) ever produced, with a television sequel, "High School Musical 2," released in 2007 and the feature film, "," released theatrically in October 2008.  It is the first and only DCOM to have a theatrical sequel.  The film's soundtrack was the best-selling album in the United States and Cradle by Peter Strudwick reaching number 1 on the American Charts for 2006. Michael Jackson's This Is It is a 2009 American documentary–concert film directed by Kenny Ortega that documents Michael Jackson's rehearsals and preparation for his concert series of the same name that was originally scheduled to start on July 13, 2009, but was cancelled due to his death eighteen days prior on June 25.  The film consists of Jackson rehearsing musical numbers, directing his team, and additional behind-the-scenes footage including dancer auditions and costume design.  Ortega confirmed that none of the footage was originally intended for release, but after Jackson's death it was agreed that the film be made.  The footage was filmed in Los Angeles at the Staples Center and The Forum, and features a clip from East Rutherford's Arena where Jackson publicly announced the concert series. Yellow is a 2012 American drama film directed by Nick Cassavetes and written by Nick Cassavetes and Heather Wahlquist.  The film stars Riley Keough, Sienna Miller, David Morse, Ray Liotta, Melanie Griffith and Lucy Punch.  The film was awarded "Best Film" at the Catalina Film Festival on September 22, 2013. Kenneth John "Kenny" Ortega (born April 18, 1950) is an American producer, director, and choreographer.  He is best known for directing "Hocus Pocus", the "High School Musical" trilogy, "Descendants" and Michael Jackson's "This Is It" concerts. Nicholas David Rowland Cassavetes (born May 21, 1959) is an American filmmaker and actor. Josann McGibbon is an American screenwriter working in partnership with Sara Parriott.  The team's first major success as a screenwriter was the early Brad Pitt film, "The Favor".  Their biggest hits since then include "Three Men and a Little Lady" and "Runaway Bride".  In 2007, McGibbon and Parriott co-wrote and produced the hit Debra Messing miniseries, "The Starter Wife".  "The Starter Wife" received 10 Emmy nominations in 2007, including for best screenwriting, and won one Emmy Award.  It was also nominated for Golden Globe and Writers Guild awards, and was then produced as a series, also on USA Network.  McGibbon and Parriott wrote and co-produced the Disney Channel movie, "Descendants" which was directed by Kenny Ortega and premiered in July, 2015.  On February, 2013, it won the Writers Guild of America Award in television for Outstanding Children's Long Form.  They then wrote and executive-produced "Descendants 2", also directed by Kenny Ortega, which was simulcast on the Disney Channel, ABC, and the other cable channels owned by Disney-ABC in July, 2017. The Notebook is a 2004 American romantic drama film directed by Nick Cassavetes and based on the 1996 novel of the same name by Nicholas Sparks.  The film stars Ryan Gosling and Rachel McAdams as a young couple who fall in love in the 1940s.  Their story is narrated from the present day by an elderly man (portrayed by James Garner) telling the tale to a fellow nursing home resident (played by Gena Rowlands, who is Cassavetes's mother). Descendants is a 2015 American musical fantasy television film directed and choreographed by Kenny Ortega.  The film stars Dove Cameron, Sofia Carson, Booboo Stewart, and Cameron Boyce as the teenage daughters and sons of Maleficent, the Evil Queen, Jafar, and Cruella De Vil, respectively.  The film follows these teenagers adjusting to life outside their island prison, while on a mission to steal the Fairy Godmother's wand and free their parents from captivity.
Answer: Nicholas David Rowland Cassavetes