Question: What age did one of the actress that stars in Brain on Fire begin her acting career?

Context paragraphs:
Chloë Grace Moretz: Chloë Grace Moretz ( ; born February 10, 1997) is an American actress and model.  She began her acting career in 2004 at age seven.  Her early film credits include roles in "The Amityville Horror" (2005), "The Poker House" (2008), "(500) Days of Summer" (2009), "Diary of a Wimpy Kid" (2010) and "Let Me In" (2010).

Charles Sullivan (actor): Charles Sullivan (April 24, 1899 – June 25, 1972), also known as Charlie Sullivan, was an American character actor who was born just before the turn of the 20th century on April 24, 1899.  He would begin his acting career at the age of 25, in the 1924 silent film, "His People".  Over his highly prolific 30-plus-year career some sources have him appearing in over 500 films, while the American Film Institute credits him with appearing in over 250 films.

David Newell (actor, born 1905): David Newell was primarily known as an American character actor, whose acting career spanned from the very beginning of the sound film era through the middle of the 1950s.  He made his film debut in a featured role in "The Hole in the Wall", a 1929 film starring Edward G. Robinson and Claudette Colbert.  Early in his career he had many featured roles, in such films as: RKO's "The Runaway Bride" in 1929, starring Mary Astor; 1931's "Ten Cents a Dance", starring Barbara Stanwyck and directed by Lionel Barrymore; and "White Heat" in 1934.  He would occasionally receive a starring role, as in 1930's "Just Like Heaven", which co-starred Anita Louise.  However, by the mid-1930s he was being relegated to mostly smaller supporting roles.  Some of the more notable films he appeared in include: "A Star is Born" (1937), which stars Janet Gaynor and Fredric March; "Blondie" (1938); the Bette Davis vehicle, "Dark Victory" (1939); "Day-Time Wife" (1939), starring Tyrone Power and Linda Darnell; "It's a Wonderful World" (1939), with James Stewart and Claudette Colbert; "Rings on Her Fingers" (1942), starring Henry Fonda and Gene Tierney; the Danny Kaye and Dinah Shore film, "Up in Arms" (1944), which also stars Dana Andrews; 1947's "Killer McCoy" with Mickey Rooney, Brian Donlevy, and Ann Blyth; "Homecoming" (1948), starring Clark Gable, Lana Turner, and Anne Baxter; "That Wonderful Urge" (1949), starring Tyrone Power and Gene Tierney; "David and Bathsheba" (1951), starring Gregory Peck and Susan Hayward; and Cecil B. DeMille's 1952 blockbuster, "The Greatest Show on Earth".  During his 25-year acting career, he appeared in over 110 films.  His final appearance in film was in 1954's "The Eddie Cantor Story", in which he had a small supporting role.

Sally Boyden (singer): Sally Ann Boyden (born 21 May 1965) is an Australian singer, songwriter, and actress.  Boyden commenced her performance career, at the age of seven, on TV series, "Young Talent Time", in 1973.  After leaving in 1976, she released her debut solo album, "The Littlest Australian" (early 1976), and appeared on United States TV's "The Waltons" (series 6, 1977) to begin her international acting career.

Brain Age Express: Brain Age Express (known in Japan as Chotto Brain Training and in Europe and Australia as A Little Bit of... Dr Kawashima's Brain Training) are three educational puzzle video games developed by Nintendo for the Nintendo DSi's DSiWare download service.  They are the third series of games in the "Brain Age" series, and are repackaged versions of both "" and "" games, featuring both old and new puzzles.  There are three editions: "Arts & Letters", "Math", and "Sudoku".  The "Arts & Letters" and "Math" versions were originally released on December 24, 2008 in Japan as launch titles for the DSiWare service, and the Sudoku edition on April 22, 2009 in Japan as well.  The "Math" edition is the only version currently available outside Japan, and was released on April 5, 2009 in North America and June 19, 2009 in the PAL regions, as a launch title for the service.  However, the "Arts & Letters" edition was released on August 10, 2009 in North America and October 23, 2009 in the PAL regions.  The puzzles featured in both the Literature and Science editions were created by Ryuta Kawashima.  One puzzle in each of these two editions utilizes the Nintendo DSi's camera function, while both versions allow players to use a photo for their in-game profile.  On June 19, 2015, "Brain Age Express: Sudoku" was pulled from the DSi Shop and 3DS eShop, with no official reason given.  Brain Age Math and Arts & Letters are pre-installed on North American Nintendo DSis.

Brain on Fire (film): Brain on Fire is a 2016 American-Canadian-Irish biographical drama film directed and written by Gerard Barrett, based on Susannah Cahalan's memoir "Brain on Fire: My Month of Madness".  The film stars Chloë Grace Moretz, Jenny Slate, Thomas Mann, Tyler Perry, Carrie-Anne Moss, and Richard Armitage.  Principal photography began on July 13, 2015, in Vancouver, British Columbia.  It had its world premiere at the Toronto International Film Festival on September 14, 2016.

Lindsay Lohan filmography: Lindsay Lohan is an American actress and singer-songwriter who began her acting career as a child actor in the late-1990s.  At age 11, Lohan made her motion picture debut in Disney's commercially and critically successful 1998 remake of "The Parent Trap".  She continued her acting career by appearing in a number of Disney films, including "Life-Size" (2000), "Get a Clue" (2002), "Freaky Friday" (2003), "Confessions of a Teenage Drama Queen" (2004) and "" (2005), along with her first non-Disney film "Mean Girls" (2004), which became a massive success by grossing over $129 million and later becoming a cult classic film.  Lohan also did smaller, more mature roles in independent movies, receiving positive reviews on her acting, including Robert Altman's "A Prairie Home Companion" (2005), Emilio Estevez's "Bobby" (2006) and Jarrett Schaefer's "Chapter 27" (2007).  Between 2006 and 2007, Lohan continued her career by starring in films like "Just My Luck" (2006), "Georgia Rule" (2007), and "I Know Who Killed Me" (2007).  Lohan's career had faced many interruptions from legal and personal troubles during the mid to late 2000s and 2010s, but she has still been able to appear in 26 films (including 6 as a personality), 12 television appearances, 1 play and 5 music videos.

Mind Quiz: Mind Quiz, also known as Mind Quiz: Exercise Your Brain or Mind Quiz: Your Brain Coach (Nounenrei: Nou Stress Kei Atama Scan in Japan), is a mental training game for the Nintendo DS and PlayStation Portable.  It is similar to Nintendo's "" It involves playing different training exercises to measure and improve particular parts of the player's brain, such as one's brain age and its brain stress degree.

Dean Buonomano: Dean V. Buonomano is an American neuroscientist, psychologist and author.  He is a professor at UCLA whose research focuses on neurocomputation and how the brain tells time.  Buononano has been described as one of the “first neuroscientists to begin to ask how the human brain encodes time” and has been published in various scientific journals.  He is the author of two books, "Brain Bugs: How the Brain's Flaws Shape our Lives" and "Your Brain is a Time Machine: The Neuroscience and Physics of Time".  Buonomano’s first book "Brain Bugs" examines the human brain’s functional strengths and weaknesses, ultimately attributing some of the brain’s ‘bugs’ (or flaws) to evolution.

Robert Kerman: Robert Charles Kerman (born December 16, 1947), also known as R. Bolla, is an American actor who had a noted pornographic acting career during what is considered to be the "golden age" period of the porn film industry during the mid-1970s to the early/mid-1980s.  He grew up in a middle-class Italian neighborhood of Bensonhurst, Brooklyn.  As R. Bolla, he appeared in well over 100 pornographic films, most famously "Debbie Does Dallas" (1978).  He is one of the few adult performers to have an appreciable mainstream acting career.

Supporting paragraphs: Brain on Fire (film) Chloë Grace Moretz
Answer: seven