Question: Name the American actor, film producer and environmentalist activist who co-wrote the '11th Hour', a 2007 documentary film about the state of the natural environment, distributed by Warner Independent Pictures?

full_context: Document 1: Richard Gere: Richard Tiffany Gere ( ; born August 31, 1949) is an American actor and humanitarian activist. He began in films in the 1970s, playing a supporting role in "Looking for Mr. Goodbar" (1977) and a starring role in "Days of Heaven" (1978). He came to prominence with his role in the film "American Gigolo" (1980), which established him as a leading man and a sex symbol. He went on to star in many well-received films, including "An Officer and a Gentleman" (1982), "The Cotton Club" (1984), "Pretty Woman" (1990), "Primal Fear" (1996), "Runaway Bride" (1999), "I'm Not There" (2007), "Arbitrage" (2012) and "" (2016). For portraying Billy Flynn in the Academy Award-winning musical "Chicago" (2002), he won a Golden Globe Award and a Screen Actors Guild Award as part of the cast.
Document 2: An Inconvenient Sequel: Truth to Power: An Inconvenient Sequel: Truth to Power is a 2017 American documentary film directed by Bonni Cohen and Jon Shenk about former United States Vice President Al Gore's continuing mission to battle climate change. The sequel to "An Inconvenient Truth" (2006), the film addresses the progress made to tackle the problem and Gore's global efforts to persuade governmental leaders to invest in renewable energy, culminating in the landmark signing of 2016's Paris Agreement. The film was released on July 28, 2017, by Paramount Pictures.
Document 3: The 11th Hour (2007 film): The 11th Hour is a 2007 documentary film, created, produced, co-written and narrated by Leonardo DiCaprio, on the state of the natural environment. It was directed by Leila Conners Petersen and Nadia Conners and financed by Adam Lewis and Pierre André Senizergues, and distributed by Warner Independent Pictures.
Document 4: What's Eating Gilbert Grape: What's Eating Gilbert Grape is a 1993 American drama film directed by Lasse Hallström and starring Johnny Depp, Juliette Lewis, Darlene Cates and Leonardo DiCaprio. The film follows 24-year-old Gilbert (Depp), a grocery store clerk caring for his morbidly obese mother and mentally impaired younger brother in a sleepy Midwestern town. Peter Hedges wrote the screenplay, adapted from his 1991 novel of the same name. The film was well-received; DiCaprio received his first Academy Award nomination for his role.
Document 5: Johnny Depp: John Christopher Depp II (born June 9, 1963) is an American actor, producer, and musician. He has won the Golden Globe Award and Screen Actors Guild Award for Best Actor. He rose to prominence on the 1980s television series "21 Jump Street", becoming a teen idol.
Document 6: Earth (2007 film): Earth is a 2007 nature documentary film which depicts the diversity of wild habitats and creatures across the planet. The film begins in the Arctic in January of one year and moves southward, concluding in Antarctica in the December of the same year. Along the way, it features the journeys made by three particular species—the polar bear, African bush elephant and humpback whale—to highlight the threats to their survival in the face of rapid environmental change. A companion piece to the 2006 BBC/Discovery television series "Planet Earth", the film uses many of the same sequences, though most are edited differently, and features previously unseen footage.
Document 7: Strange Days on Planet Earth: Strange Days on Planet Earth is a four-part (1 hour each) television program on PBS concerning human impact on the environment. It is narrated by Edward Norton. The show was produced by Sea Studios Foundation. Strange Days on Planet Earth grew into an ongoing partnership with the National Geographic Society to bring focus on our personal connection to the planet’s life systems.
Document 8: Tom Cruise: Thomas Cruise Mapother IV (born July 3, 1962), known professionally as Tom Cruise, is an American actor and producer. He has been nominated for three Academy Awards and has won three Golden Globe Awards. He started his career at age 19 in the film "Endless Love".
Document 9: Leonardo DiCaprio filmography: Leonardo DiCaprio is an American actor and producer who started his career performing as a child on television. He appeared on the shows "The New Lassie" (1989) and "Santa Barbara" (1990) and also had long running roles in the comedy-drama "Parenthood" (1990) and the sitcom "Growing Pains" (1991), before making his film debut in the 1991 direct-to-video release "Critters 3". Two years later, he played Tobias Wolff opposite Robert De Niro in "This Boy's Life" (1993). He followed this with a supporting role in "What's Eating Gilbert Grape" (1993), which earned him a nomination for the Academy Award for Best Supporting Actor. In 1995, DiCaprio played the American author Jim Carroll in "The Basketball Diaries" and the French poet Arthur Rimbaud in "Total Eclipse". The following year he played Romeo Montague in the Baz Luhrmann-directed film "Romeo + Juliet" (1996). DiCaprio starred opposite Kate Winslet in the James Cameron-directed film "Titanic" (1997). The film became the highest grossing at the worldwide box-office, and made him famous globally. For his performance, he received the MTV Movie Award for Best Male Performance and his first nomination for the Golden Globe Award for Best Actor – Motion Picture Drama.
Document 10: Annie Leonard: Annie Leonard (born 1964) is an American proponent of sustainability and a critic of consumerism. She created the animated film "The Story of Stuff" (2007), which describes the life cycle of material goods. In 2014, she became the Executive Director of Greenpeace USA.
Document 11: Dalai Lama Renaissance: Dalai Lama Renaissance is a 2007 feature-length documentary film, produced and directed by Khashyar Darvich, and narrated by actor Harrison Ford. The film documents the Dalai Lama's meeting with the self-titled "Synthesis" group, made up of 40 Western "renaissance" thinkers who hope to use the meeting to change the world and resolve many of the world's problems. The meeting took place at the Dalai Lama's home in Dharamsala, India in September, 1999.
Document 12: Encounters at the End of the World: Encounters at the End of the World is a 2007 American documentary film by Werner Herzog. The film studies people and places in Antarctica. It was released in North America on June 11, 2008, and distributed by THINKFilm.
Document 13: Human (2015 film): Human is a 2015 documentary by French environmentalist Yann Arthus-Bertrand. The film is almost entirely composed of exclusive aerial footage and first-person stories told into the camera. It was the first movie to premiere in the General Assembly Hall of the United Nations, to an audience of 1,000 viewers, including the UN Secretary General Ban Ki-moon.
Document 14: Tom Cruise filmography: Tom Cruise is an American actor and producer who made his film debut with a minor role in the 1981 romantic drama "Endless Love". Two years later he made his breakthrough by starring in the romantic comedy "Risky Business" (1983), which garnered Cruise his first nomination for the Golden Globe Award for Best Actor – Motion Picture Musical or Comedy. In 1986, Cruise played a fighter pilot in the Tony Scott-directed action drama "Top Gun" (the highest-grossing film that year), and also starred opposite Paul Newman in the Martin Scorsese-directed drama "The Color of Money". Two years later he played opposite Dustin Hoffman in the Academy Award for Best Picture-winning drama "Rain Man" (1988), and also appeared in the Golden Raspberry Award for Worst Picture-winning romantic drama "Cocktail" (1988). In doing so Cruise became the first and only person as of 2014 to star in a Best Picture Oscar winner and a Worst Picture Razzie winner in the same year. His next role was as anti-war activist Ron Kovic in the drama adaptation of Kovic's memoir of the same name, "Born on the Fourth of July" (1989). For his performance Cruise received the Golden Globe Award for Best Actor – Motion Picture Drama and his first nomination for the Academy Award for Best Actor.
Document 15: Leonardo DiCaprio: Leonardo Wilhelm DiCaprio ( ; born November 11, 1974) is an American actor, film producer, and environmental activist. DiCaprio began his career by appearing in television commercials in the late 1980s, after which he had recurring roles in various television series such as the soap opera "Santa Barbara" and the sitcom "Growing Pains". He began his film career by starring as Josh in "Critters 3" (1991). He starred in the film adaptation of the memoir "This Boy's Life" (1993), and was praised for his supporting role in "What's Eating Gilbert Grape" (1993). He gained public recognition with leading roles in "The Basketball Diaries" (1995) and the romantic drama "Romeo + Juliet" (1996), before achieving international fame with James Cameron's epic romance "Titanic" (1997), which became the highest-grossing film of all time until Cameron's science fiction film "Avatar" (2009) overtook it.
ground_truth: Leonardo DiCaprio