Question: When was the Golden Gate Bridge built in the city where the RSA security conference is held?

full_context: Document 1: Golden Gate Bridge: The Frommer's travel guide describes the Golden Gate Bridge as ``possibly the most beautiful, certainly the most photographed, bridge in the world. ''At the time of its opening in 1937, it was both the longest and the tallest suspension bridge in the world, with a main span of 4,200 feet (1,280 m) and a total height of 746 feet (227 m).
Document 2: Estonia: The Ministry of Defence and the Defence Forces have been working on a cyberwarfare and defence formation for some years now. In 2007, a military doctrine of an e-military of Estonia was officially introduced as the country was under massive cyberattacks in 2007. The proposed aim of the e-military is to secure the vital infrastructure and e-infrastructure of Estonia. The main cyber warfare facility is the Computer Emergency Response Team of Estonia (CERT), founded in 2006. The organisation operates on security issues in local networks.
Document 3: Royal Gorge Bridge: The Royal Gorge Bridge is a tourist attraction near Cañon City, Colorado within Royal Gorge Bridge & Park, a 360 - acre (150 ha) amusement park located along the edge of the Royal Gorge around both ends of the bridge. The bridge crosses the gorge 955 feet (291 m) above the Arkansas River and held the record of highest bridge in the world from 1929 until 2001 when it was surpassed by the Liuguanghe Bridge in China. The Royal Gorge Bridge maintained the title of the world's highest suspension bridge until the Beipan River Guanxing Highway Bridge was completed in 2003, also in China. The bridge remains the highest bridge in the United States and was among the ten highest bridges in the world until 2012.
Document 4: New York City: The George Washington Bridge is the world's busiest motor vehicle bridge, connecting Manhattan to Bergen County, New Jersey. The Verrazano-Narrows Bridge is the longest suspension bridge in the Americas and one of the world's longest. The Brooklyn Bridge is an icon of the city itself. The towers of the Brooklyn Bridge are built of limestone, granite, and Rosendale cement, and their architectural style is neo-Gothic, with characteristic pointed arches above the passageways through the stone towers. This bridge was also the longest suspension bridge in the world from its opening until 1903, and is the first steel-wire suspension bridge.
Document 5: Renewable energy commercialization: Just as there is a need for tax shifting, there is also a need for subsidy shifting. Subsidies are not an inherently bad thing as many technologies and industries emerged through government subsidy schemes. The Stern Review explains that of 20 key innovations from the past 30 years, only one of the 14 was funded entirely by the private sector and nine were totally publicly funded. In terms of specific examples, the Internet was the result of publicly funded links among computers in government laboratories and research institutes. And the combination of the federal tax deduction and a robust state tax deduction in California helped to create the modern wind power industry.
Document 6: Golden Gate Bridge: The Golden Gate Bridge's clearance above high water averages 220 feet (67 m) while its towers, at 746 feet (227 m) above the water, were the world's tallest on a suspension bridge until 1993 when it was surpassed by the Mezcala Bridge, in Mexico.
Document 7: Sydney Harbour Bridge: Under the direction of Dr John Bradfield of the NSW Department of Public Works, the bridge was designed and built by British firm Dorman Long and Co Ltd of Middlesbrough and opened in 1932. The bridge's design was influenced by the Hell Gate Bridge in New York City. It is the sixth longest spanning - arch bridge in the world and the tallest steel arch bridge, measuring 134 m (440 ft) from top to water level. It was also the world's widest long - span bridge, at 48.8 m (160 ft) wide, until construction of the new Port Mann Bridge in Vancouver was completed in 2012.
Document 8: Computer security: Public Safety Canada’s Canadian Cyber Incident Response Centre (CCIRC) is responsible for mitigating and responding to threats to Canada’s critical infrastructure and cyber systems. The CCIRC provides support to mitigate cyber threats, technical support to respond and recover from targeted cyber attacks, and provides online tools for members of Canada’s critical infrastructure sectors. The CCIRC posts regular cyber security bulletins on the Public Safety Canada website. The CCIRC also operates an online reporting tool where individuals and organizations can report a cyber incident. Canada's Cyber Security Strategy is part of a larger, integrated approach to critical infrastructure protection, and functions as a counterpart document to the National Strategy and Action Plan for Critical Infrastructure.
Document 9: Computer security: Berlin starts National Cyber Defense Initiative: On June 16, 2011, the German Minister for Home Affairs, officially opened the new German NCAZ (National Center for Cyber Defense) Nationales Cyber-Abwehrzentrum located in Bonn. The NCAZ closely cooperates with BSI (Federal Office for Information Security) Bundesamt für Sicherheit in der Informationstechnik, BKA (Federal Police Organisation) Bundeskriminalamt (Deutschland), BND (Federal Intelligence Service) Bundesnachrichtendienst, MAD (Military Intelligence Service) Amt für den Militärischen Abschirmdienst and other national organisations in Germany taking care of national security aspects. According to the Minister the primary task of the new organisation founded on February 23, 2011, is to detect and prevent attacks against the national infrastructure and mentioned incidents like Stuxnet.
Document 10: Golden Gate Bridge: Golden Gate Bridge A view of the Golden Gate Bridge from the Marin Headlands Coordinates 37 ° 49 ′ 11 ''N 122 ° 28 ′ 43'' W ﻿ / ﻿ 37.81972 ° N 122.47861 ° W ﻿ / 37.81972; - 122.47861 Coordinates: 37 ° 49 ′ 11 ''N 122 ° 28 ′ 43'' W ﻿ / ﻿ 37.81972 ° N 122.47861 ° W ﻿ / 37.81972; - 122.47861 Carries 6 lanes of US 101 / SR 1 (see below), pedestrians and bicycles. Crosses Golden Gate Locale San Francisco, California and Marin County, California, U.S. Official name Golden Gate Bridge Maintained by Golden Gate Bridge, Highway and Transportation District Characteristics Design Art Deco, Suspension, truss arch & truss causeways Material Steel Total length 8,981 ft (2,737.4 m), about 1.7 mi (2.7 km) Width 90 ft (27.4 m) Height 746 ft (227.4 m) Longest span 4,200 ft (1,280.2 m) Clearance above 14 ft (4.3 m) at toll gates, Trucks can not pass Clearance below 220 ft (67.1 m) at high tide History Architect Irving Morrow Engineering design by Joseph Strauss, and Charles Ellis Construction start January 5, 1933 (1933 - 01 - 05) Construction end April 19, 1937 (1937 - 04 - 20) Opened May 27, 1937; 80 years ago (1937 - 05 - 27) Statistics Daily traffic 110,000 Toll Cars (southbound only) $7.50 (Pay by plate), $6.50 (FasTrak), $4.50 (carpools during peak hours, FasTrak only) California Historical Landmark Designated June 18, 1987 Reference no. 974 San Francisco Designated Landmark Designated May 21, 1999 Reference no. 222 Golden Gate Bridge Bridges in the San Francisco Bay
Document 11: Computer security: On October 3, 2010, Public Safety Canada unveiled Canada’s Cyber Security Strategy, following a Speech from the Throne commitment to boost the security of Canadian cyberspace. The aim of the strategy is to strengthen Canada’s "cyber systems and critical infrastructure sectors, support economic growth and protect Canadians as they connect to each other and to the world." Three main pillars define the strategy: securing government systems, partnering to secure vital cyber systems outside the federal government, and helping Canadians to be secure online. The strategy involves multiple departments and agencies across the Government of Canada. The Cyber Incident Management Framework for Canada outlines these responsibilities, and provides a plan for coordinated response between government and other partners in the event of a cyber incident. The Action Plan 2010–2015 for Canada's Cyber Security Strategy outlines the ongoing implementation of the strategy.
Document 12: Sociology of the Internet: Governments are also getting online. Some countries, such as those of Cuba, Iran, North Korea, Myanmar, the People's Republic of China, and Saudi Arabia use filtering and censoring software to restrict what people in their countries can access on the Internet. In the United Kingdom, they also use software to locate and arrest various individuals they perceive as a threat. Other countries including the United States, have enacted laws making the possession or distribution of certain material such as child pornography illegal but do not use filtering software. In some countries Internet service providers have agreed to restrict access to sites listed by police.
Document 13: Computer security: This has led to new terms such as cyberwarfare and cyberterrorism. More and more critical infrastructure is being controlled via computer programs that, while increasing efficiency, exposes new vulnerabilities. The test will be to see if governments and corporations that control critical systems such as energy, communications and other information will be able to prevent attacks before they occur. As Jay Cross, the chief scientist of the Internet Time Group, remarked, "Connectedness begets vulnerability."
Document 14: Computer security: The question of whether the government should intervene or not in the regulation of the cyberspace is a very polemical one. Indeed, for as long as it has existed and by definition, the cyberspace is a virtual space free of any government intervention. Where everyone agree that an improvement on cybersecurity is more than vital, is the government the best actor to solve this issue? Many government officials and experts think that the government should step in and that there is a crucial need for regulation, mainly due to the failure of the private sector to solve efficiently the cybersecurity problem. R. Clarke said during a panel discussion at the RSA Security Conference in San Francisco, he believes that the "industry only responds when you threaten regulation. If industry doesn't respond (to the threat), you have to follow through." On the other hand, executives from the private sector agree that improvements are necessary, but think that the government intervention would affect their ability to innovate efficiently.
Document 15: Golden Gate Bridge: Strauss was chief engineer in charge of overall design and construction of the bridge project. However, because he had little understanding or experience with cable - suspension designs, responsibility for much of the engineering and architecture fell on other experts. Strauss's initial design proposal (two double cantilever spans linked by a central suspension segment) was unacceptable from a visual standpoint. The final graceful suspension design was conceived and championed by Leon Moisseiff, the engineer of the Manhattan Bridge in New York City.
ground_truth: 1937
sub_queries: Where was the RSA Security Conference held? Answer: San Francisco
when was the San Francisco golden gate bridge built Answer: 1937