Question: How many Academy Award nomination has the actress had, who starred in Silkwood with Cher and Kurt Russell ?
Context: Mark Robert Michael Wahlberg (born June 5, 1971) is an American actor, producer, businessman, former model, and former rapper.  Wahlberg was known as Marky Mark in his early career as frontman for the group Marky Mark and the Funky Bunch, releasing the albums "Music for the People" and "You Gotta Believe".  Wahlberg later transitioned to acting, appearing in films such as the drama "Boogie Nights" and the satirical war comedy-drama "Three Kings" during the 1990s.  In the 2000s, he starred in the biographical disaster drama "The Perfect Storm", the science fiction film "Planet of the Apes", the heist film "The Italian Job", and the Martin Scorsese-directed neo-noir crime drama "The Departed", for which he received an Academy Award nomination for Best Supporting Actor.  In the 2010s, he starred in the action comedy "The Other Guys" alongside Will Ferrell, the biographical sports drama "The Fighter" (for which he earned an Academy Award nomination as a producer for Best Picture), the comedy "Ted", the war film "Lone Survivor", the crime comedy "Pain & Gain", the science fiction action film "" and the sequel "", the comedy "Daddy's Home", the disaster film "Deepwater Horizon", and the thriller "Patriots Day". Silkwood is a 1983 American biographical drama film directed by Mike Nichols starring Meryl Streep, Cher and Kurt Russell.  The screenplay by Nora Ephron and Alice Arlen was inspired by the life of Karen Silkwood.  Silkwood was a nuclear whistleblower and a labor union activist who died in a suspicious car accident while investigating alleged wrongdoing at the Kerr-McGee plutonium plant where she worked.  In real life, her death was vindicated in a victorious 1979 lawsuit, "Silkwood v. Kerr-McGee", led by attorney Gerry Spence.  The jury rendered its verdict of $10 million in damages to be paid to the Silkwood estate (her children), the largest amount in damages ever awarded for that kind of case at the time.  The Silkwood estate eventually settled for $1.3 million. Cher is an American singer, actress, producer, author and philanthropist.  She has been honored with numerous worldwide awards and accolades recognizing her success in music, television, fashion and film, both as a solo artist and as part of Sonny & Cher.  She has also been honored for her humanitarian and charity work.  She has won an Academy Award, a Grammy Award, an Emmy Award, three Golden Globe Awards, and the Best Actress Award at the Cannes Film Festival, making her one of few artists to have received those top honors.  Cher is also the only artist to date to have achieved a number-one single on a Billboard chart in each of the past six decades.  Cher is a Tony Award away from achieving the EGOT status (Emmy, Grammy, Oscar, and Tony) which is considered the "grand slam" of American show business. Nora Ephron ( ; May 19, 1941 – June 26, 2012) was an American writer and filmmaker.  She is best known for her romantic comedy films and was nominated three times for the Academy Award for Best Writing: for "Silkwood" (1983), "When Harry Met Sally..." (1989), and "Sleepless in Seattle" (1993).  She won a BAFTA Award for Best Original Screenplay for "When Harry Met Sally...".  She sometimes wrote with her sister Delia Ephron.  Her last film was "Julie & Julia."  She also co-authored the Drama Desk Award–winning theatrical production "Love, Loss, and What I Wore".  In 2013, Ephron received a posthumous Tony Award nomination for Best Play for "Lucky Guy". Meryl Streep is an American actress who has had an extensive career in film, television, and stage.  She made her stage debut in 1975 with The Public Theater production of "Trelawny of the Wells".  She went on to perform several roles on stage in the 1970s, garnering a Tony Award nomination for her role in "27 Wagons Full of Cotton" (1976).  In 1977, Streep starred in the television movie "The Deadliest Season", and made her film debut with a brief role alongside Jane Fonda in "Julia".  A supporting role in the war drama "The Deer Hunter" (1978) proved to be a breakthrough for Streep and she received her first Academy Award nomination for it.  She won the award the following year for playing a troubled wife in the top-grossing drama "Kramer vs. Kramer" (1979).  Also in 1978, Streep played a German married to a Jew in Nazi Germany in the television miniseries "Holocaust", which earned her the Emmy Award for Best Actress. Sherri Lou "Dusty" Ellis (October 13, 1953 – November 2, 2012) was an American woman known for her involvement in the Kerr-McGee plutonium plant criminal case of the 1970s when she and her roommate Karen Silkwood became activists and nuclear whistleblowers after both of their bodies tested positive for plutonium contamination.  Their fight for safer working conditions was chronicled in the 1983 film "Silkwood", in which Ellis was portrayed by Cher, who was nominated for the Academy Award for Best Supporting Actress for her performance as Ellis.  After Karen Silkwood's death in 1974, Ellis continued to protest and was involved in a series of legal battles against Kerr-McGee and the state of Oklahoma. Mary Louise "Meryl" Streep (born June 22, 1949) is an American actress and philanthropist.  Cited in the media as the "best actress of her generation," Streep is particularly known for versatility in her roles and her accent adaptation.  Nominated for 20 Academy Awards, Streep has more nominations than any other actor, and is one of the six actors to have won three or more competitive Oscars for acting.  Streep has also received 30 Golden Globe nominations, winning eight - more nominations and more competitive wins than any other actor. Diana Elizabeth Scarwid (born August 27, 1955) is an American actress.  Her performance in the 1980 film "Inside Moves" garnered her an Academy Award nomination for Best Supporting Actress.  The following year she portrayed the adult Christina Crawford in "Mommie Dearest" (1981).  Scarwid has over 70 film and television credits, including "Pretty Baby" (1978), "Silkwood" (1983) "Psycho III" (1986), "Extremities" (1986), "Brenda Starr" (1989) and "What Lies Beneath" (2000).  She received an Emmy Award nomination for the 1995 TV movie "Truman". Swing Shift is a 1984 American romantic drama war film directed by Jonathan Demme and produced by and starring Goldie Hawn with Kurt Russell.  It also starred Christine Lahti, Fred Ward and Ed Harris.  Lahti earned an Academy Award nomination for Best Supporting Actress for her tragic portrayal of heart-broken ex-singer and Hawn's character's close friend Hazel, losing to Peggy Ashcroft for "A Passage to India".  Singer Belinda Carlisle made a foray into the film, and Holly Hunter can be seen in one of her first movie roles. Michael C. Flessas (born June 2, 1959 in Miami, Florida), is the birth name of American actor Michael Flessas, who is of Greek ancestry.  Flessas' most notable film role was "Angry Man" in the Cannes Film Festival 2000 Palme d'Or winning film "Dancer in the Dark" directed by Danish film director Lars von Trier.  Originally, the director himself considered playing the role but, instead, the role was given to Flessas.  "Dancer in the Dark" starred Icelandic singer/actress Björk who won the Best Actress award at Cannes for her role.  French film icon, César Award winner, and Academy Award nominee Catherine Deneuve, and other noteworthy artists such as Academy Award and Tony Award winner Joel Grey, Peter Stormare, David Morse, and Stellan Skarsgård also performed in the multiple prize winning film.  One of Björk's songs for the film received an Academy Award nomination for Best Song.
Answer: 20