Question: What is the ethnicity of Ivanka Trump’s mother?

Context articles: The Apprentice (U.S. season 6)
The Apprentice (U.S. season 13)
Charles Kushner
The Trump Card (book)
Richard Prince
Miss Teen USA 1997
Ivana Trump
Beast (street artist)
Women Who Work (book)
Ivanka Trump

The Apprentice: Los Angeles is the sixth installment of the US version of "The Apprentice" reality television show.
 It was confirmed on November 30, 2005.
 Like the other Apprentice seasons, Donald Trump is the executive producer and host in his quest to hire a sixth apprentice.
 In a departure from the previous five "Apprentice" seasons, this one was shot in Los Angeles, California.
 As with seasons two through five, this season featured 18 contestants (whom Trump calls "candidates").
 Ivanka Trump made her debut as a full-time boardroom judge this season (replacing Carolyn Kepcher, who was recently fired).
 Donald Trump, Jr. also made his debut as a full-time judge this season (replacing George H. Ross, who did not appear due to the show's LA filming schedule, but did make a cameo appearance in the finale).
The Celebrity Apprentice 6 (also known as All-Star Celebrity Apprentice or The Apprentice 13) is the sixth installment of the reality game show, "Celebrity Apprentice", which premiered on Sunday, March 3, 2013.
 This season's cast is an "All-Star" celebrity cast, bringing back many fan favorites to compete head-to-head.
 There are eight men and six women in the cast.
 Brande Roderick, Claudia Jordan, Dennis Rodman, La Toya Jackson, Lil Jon, Omarosa Manigault and the only previous winner, Bret Michaels formed team Power and team Plan B was formed by Dee Snider, Gary Busey, Lisa Rinna, Marilu Henner, Penn Jillette, Stephen Baldwin and Trace Adkins.
 This marked Omarosa's third appearance on "The Apprentice", more than any other contestant.
 Also appearing as guest judges are past winners Joan Rivers, Piers Morgan, Arsenio Hall and John Rich, along with past judge George Ross, as well as Ivanka Trump, Eric Trump, and Donald Trump Jr.
 This season also introduced the Social Boardroom MVP reward.
 Viewers went on Twitter to select the celebrity they think did best in the task.
 The celebrity who received the most votes won additional money for their charity.
 This season premiered on March 3, 2013.
Charles Kushner (born May 16, 1954) is an American real estate developer.
 He founded Kushner Companies in 1985.
 In 2005, he was convicted of illegal campaign contributions, tax evasion, and witness tampering, and served time in federal prison.
 After his release, he resumed his career in real estate.
 His son is Jared Kushner, who is the husband of Ivanka Trump and son-in-law and senior advisor to President of the United States Donald Trump.
The Trump Card: Playing to Win in Work and Life is a 2009 book by Ivanka Trump.
Richard Prince (born 1949) is an American painter and photographer.
 Prince began copying other photographers' work in 1975.
 His image, "Untitled (Cowboy)", a rephotographing of a photograph taken originally by Sam Abell and appropriated from a cigarette advertisement, was the first rephotograph to raise more than $1 million at auction when it was sold at Christie's New York in 2005.
 He is regarded as "one of the most revered artists of his generation" according to the "New York Times".
 In 2017, he generated controversy by returning a $36,000 payment he had received in 2014 for his portrayal of Ivanka Trump, claiming that he could not live with the idea of one of his works being in the collection of the Trump family.
The pageant was hosted by J. Eddie Peck, with color commentary by Ivanka Trump, daughter of new pageant owner Donald Trump.
 This was the first year since 1988 that there was no special entertainment.
Ivana Marie Trump (née Zelníčková , ] ; February 20, 1949) is a Czech-American businesswoman and former fashion model.
 She was the first wife of Donald Trump from 1977 until 1992.
The political element is evident in Beast's work, even in pieces that depict celebrities such as Ivanka Trump.
 Beast has produced public artworks that portray some of the most powerful political figures in the world, including Vladimir Putin and Barack Obama in a tet-a-tet, Donald Trump, Angela Merkel, along with others, such as Marine Le Pen, Alexis Tsipras and Jean-Claude Juncker.
Women Who Work is a 2017 book by Ivanka Trump.
 A self-help book intended to help women achieve self-actualization, it deals with work-life balance among other topics.
 It includes guest essays and several businesspeople, political figures, and self-help authors are quoted.
Ivanka Trump ( born Ivana Marie Trump; October 30, 1981) is an American television personality, fashion designer, author and businesswoman who is an advisor to the President of the United States, Donald Trump.
 She is the daughter of the president and his first wife, former model Ivana Trump.