Question: What was the walk score given to the birth place of The House I live in's producer?

full_context: Document 1: Boston: With nearly a third of Bostonians using public transit for their commute to work, Boston has the fifth-highest rate of public transit usage in the country. Boston's subway system, the Massachusetts Bay Transportation Authority (MBTA—known as the "T") operates the oldest underground rapid transit system in the Americas, and is the fourth-busiest rapid transit system in the country, with 65.5 miles (105 km) of track on four lines. The MBTA also operates busy bus and commuter rail networks, and water shuttles.
Document 2: The Best Years of Our Lives: The Best Years of Our Lives (aka Glory for Me and Home Again) is a 1946 American drama film directed by William Wyler, and starring Myrna Loy, Fredric March, Dana Andrews, Teresa Wright, Virginia Mayo, and Harold Russell. The film is about three United States servicemen re-adjusting to civilian life after coming home from World War II. Samuel Goldwyn was inspired to produce a film about veterans after reading an August 7, 1944, article in "Time" about the difficulties experienced by men returning to civilian life. Goldwyn hired former war correspondent MacKinlay Kantor to write a screenplay. His work was first published as a novella, "Glory for Me", which Kantor wrote in blank verse. Robert E. Sherwood then adapted the novella as a screenplay.
Document 3: The Bronx: Mid-20th century movies set in the Bronx portrayed densely settled, working-class, urban culture. Hollywood films such as From This Day Forward (1946), set in Highbridge, occasionally delved into Bronx life. Paddy Chayefsky's Academy Award-winning Marty was the most notable examination of working class Bronx life was also explored by Chayefsky in his 1956 film The Catered Affair, and in the 1993 Robert De Niro/Chazz Palminteri film, A Bronx Tale, Spike Lee's 1999 movie Summer of Sam, centered in an Italian-American Bronx community, 1994's I Like It Like That that takes place in the predominantly Puerto Rican neighborhood of the South Bronx, and Doughboys, the story of two Italian-American brothers in danger of losing their bakery thanks to one brother's gambling debts.
Document 4: The House I Live In (1945 film): The House I Live In is a ten-minute short film written by Albert Maltz, produced by Frank Ross and Mervyn LeRoy, and starring Frank Sinatra. Made to oppose anti-Semitism at the end of World War II, it received an Honorary Academy Award and a special Golden Globe Award in 1946.
Document 5: Ross Video: Ross Video Ltd is a privately held Canadian company that designs and manufactures equipment for live event and video production. The company's signature product line is production switchers, or vision mixers, which were the basis for the founding of the company. The company's products are used daily in over 100 countries by broadcast television networks, cable TV networks, sports stadiums, live production companies, government agencies and houses of worship. Ross Video's headquarters and manufacturing operations are located in Iroquois, Ontario, Canada, while their R&D labs are in Ottawa, Ontario, Canada.
Document 6: The Best Years of Our Lives: The Best Years of Our Lives (aka Glory for Me and Home Again) is a 1946 American drama film directed by William Wyler and starring Myrna Loy, Fredric March, Dana Andrews, Teresa Wright, Virginia Mayo, and Harold Russell. The film is about three United States servicemen readjusting to civilian life after coming home from World War II. Samuel Goldwyn was inspired to produce a film about veterans after reading an August 7, 1944, article in Time about the difficulties experienced by men returning to civilian life. Goldwyn hired former war correspondent MacKinlay Kantor to write a screenplay. His work was first published as a novella, Glory for Me, which Kantor wrote in blank verse. Robert E. Sherwood then adapted the novella as a screenplay.
Document 7: Rosser Reeves: Rosser Reeves (10 September 1910 – 24 January 1984) was an American advertising executive and pioneer of television advertising; Reeves generated millions for his clients. The Ted Bates agency, where he rose to chairman, exists today as Bates CHI & Partners.
Document 8: Scott Ross (film executive): Scott Ross (born November 20, 1951) is an American digital media executive with a career spanning three decades. In the 1980s he led George Lucas' companies and in 1993 he founded, along with James Cameron and Stan Winston, Digital Domain, Inc., one of the largest digital production studios in the motion picture and advertising industries.
Document 9: Boston: Boston is sometimes called a "city of neighborhoods" because of the profusion of diverse subsections; the city government's Office of Neighborhood Services has officially designated 23 neighborhoods.
Document 10: Frank Ross (producer): Frank Ross (August 4, 1904, Boston, Massachusetts - February 8, 1990, Los Angeles, California) was a film producer, writer, and actor.
Document 11: Boston: Nicknamed "The Walking City", Boston hosts more pedestrian commuters than do other comparably populated cities. Owing to factors such as the compactness of the city and large student population, 13 percent of the population commutes by foot, making it the highest percentage of pedestrian commuters in the country out of the major American cities. In 2011, Walk Score ranked Boston the third most walkable city in the United States. As of 2015[update], Walk Score still ranks Boston as the third most walkable US city, with a Walk Score of 80, a Transit Score of 75, and a Bike Score of 70.
Document 12: Boston: Boston is an intellectual, technological, and political center but has lost some important regional institutions, including the acquisition of The Boston Globe by The New York Times, and the loss to mergers and acquisitions of local financial institutions such as FleetBoston Financial, which was acquired by Charlotte-based Bank of America in 2004. Boston-based department stores Jordan Marsh and Filene's have both been merged into the Cincinnati–based Macy's. Boston has experienced gentrification in the latter half of the 20th century, with housing prices increasing sharply since the 1990s. Living expenses have risen, and Boston has one of the highest costs of living in the United States, and was ranked the 129th most expensive major city in the world in a 2011 survey of 214 cities. Despite cost of living issues, Boston ranks high on livability ratings, ranking 36th worldwide in quality of living in 2011 in a survey of 221 major cities.
Document 13: Boston: Boston's park system is well-reputed nationally. In its 2013 ParkScore ranking, The Trust for Public Land reported that Boston was tied with Sacramento and San Francisco for having the third-best park system among the 50 most populous US cities. ParkScore ranks city park systems by a formula that analyzes the city's median park size, park acres as percent of city area, the percent of residents within a half-mile of a park, spending of park services per resident, and the number of playgrounds per 10,000 residents.
Document 14: Shadows of Memory: "Shadows of Memory" caps a series of documentaries von Alemann filmed on the history of Germany, this time turning her lens on the Holocaust. She returns to the town of her family’s origins where the lush landscapes contrast with the jarring truth her mother shares with daughter and granddaughter. Letting their conversation flow naturally, the intimate documentary explores how anti-Semitism developed in Germany and how average citizens ignored the evils of the Holocaust.
Document 15: Betsy Ross (film): Betsy Ross is a surviving 1917 American silent historical film starring Alice Brady and produced and distributed by her father William A. Brady.
ground_truth: 80
sub_queries: The House I Live In >> producer Answer: Frank Ross
Frank Ross >> place of birth Answer: Boston
What was the walk score given to Boston ? Answer: 80