Question: Which of Tracy Anderson's clients was born on May 13, 1986 ?
Context: Brooke Victoria Anderson (born May 13, 1978) was a co-host of "The Insider", and is now a correspondent for "Entertainment Tonight".  Previously, she was a culture and entertainment anchor and producer for CNN and served as co-host for "Showbiz Tonight" on HLN.  Based in CNN's Los Angeles, California bureau, Anderson joined the network in July 2000. Scott Campbell (born May 13, 1977) is a New York–based American artist and tattoo artist whose clients include Howard Stern, Sting, Robert Downey, Jr., Courtney Love, Orlando Bloom, Josh Hartnett, and Marc Jacobs. Lena Dunham ( ; born May 13, 1986) is an American actress, writer, producer, and director.  She is best known as the creator, writer and star of the HBO series "Girls" (2012–2017), for which she has received numerous Emmy Award nominations and two Golden Globe Awards. Dunham's work on "Girls" also led her to become the first woman to win the Directors Guild of America Award for Outstanding Directing – Comedy Series in 2013.  That year Dunham was included in the "Time" 100 list of the most influential people in the world.  In 2014, Dunham released her first book, "Not That Kind of Girl: A Young Woman Tells You What She's "Learned"". Tracy Anderson (born March 3, 1975 in Noblesville, Indiana, United States) is an American multi-platform fitness pioneer and author.  She is best known for her "Tracy Anderson Method", with clients including Gwyneth Paltrow, Nicole Richie, Lena Dunham, Courteney Cox, Shakira, Jake and Maggie Gyllenhaal, Ashley Greene, Jennifer Lopez, and Bethenny Frankel. Animosity is a 2013 horror thriller film written and directed by Brendan Steere.  It had its world premiere on May 13, 2013, and stars Tracy Willet and Marcin Paluch as two newlyweds that discover a sinister presence in the woods. Lucien Tesnière (] ; May 13, 1893 – December 6, 1954) was a prominent and influential French linguist.  He was born in Mont-Saint-Aignan on May 13, 1893.  As a professor in Strasbourg (1924), and later in Montpellier (1937), he published many papers and books on Slavic languages.  However, his importance in the history of linguistics is based mainly on his development of an approach to the syntax of natural languages that would become known as dependency grammar.  He presented his theory in his book "Éléments de syntaxe structurale" (Elements of Structural Syntax), published posthumously in 1959.  In the book he proposes a sophisticated formalization of syntactic structures, supported by many examples from a diversity of languages.  Tesnière died in Montpellier on December 6, 1954. Ida Van Smith (1917 – May 13, 2003) was an African-American pilot and flight instructor born in 1917 in Lumberton, North Carolina and died in that very town on May 13, 2003. William Harroun Behle (May 13, 1909 – February 26, 2009) was an American ornithologist from Utah.  He published around 140 papers on the biogeography and taxonomy of birds, focusing largely on birds of the Great Basin.  Behle was born in Salt Lake City, Utah on May 13, 1909, the second of three children of parents Augustus Calvin Behle, a surgeon, and Daisy May Behle.  William studied at the University of Utah, earning a B.A. in 1932 and M.A. in 1933, then pursued doctoral work at the University of California, Berkeley, under Joseph Grinnell, earning a PhD in 1937.  Aside from four summers as a naturalist at Grand Canyon National Park, he spent the majority of his career as a professor at the University of Utah, where he worked from 1937 until his retirement in 1977, and continued to perform research as professor and curator emeritus.  Behle was a fellow of the American Ornithologists' Union and American Association for the Advancement of Science, president (1972–1974) of the Cooper Ornithological Society, and member of the Wilson Ornithological Society.  He is commemorated in the scientific name of a tarantula species, "Aphonopelma behlei" (now considered a synonym of "A. marxi") named by his colleague Ralph V. Chamberlin in 1940. Ronald Yngve Bontemps (August 11, 1926 – May 13, 2017) was an American basketball player who competed in the 1952 Summer Olympics.  He was born in Taylorville, Illinois and attended Beloit College.  He was a captain of the United States men's basketball team, which won the gold medal.  He played in all eight games.  Bontemps died on May 13, 2017 in Peoria, Illinois, aged 90. Charles Buell Anderson (January 9, 1927 – May 13, 2008) was the founder of the cult Endeavor Academy, a religious community with its headquarters in Wisconsin, United States.  Prior to founding Endeavor Academy in 1992, Anderson was a real estate salesman.  Anderson also served in the US Marines in the 1940s.
Answer: Lena Dunham