Input: Read this: Historically home to the Kumeyaay people, San Diego was the first site visited by Europeans on what is now the West Coast of the United States. Upon landing in San Diego Bay in 1542, Juan Rodriguez Cabrillo claimed the entire area for Spain, forming the basis for the settlement of Alta California 200 years later. The Presidio and Mission San Diego de Alcala, founded in 1769, formed the first European settlement in what is now California. In 1821, San Diego became part of the newly-independent Mexico, which reformed as the First Mexican Republic two years later. In 1850, it became part of the United States following the MexicanAmerican War and the admission of California to the union.
Question: In what year didn't San Diego become part of the United States?

Output: unanswerable

QUES: When Eisenhower was elected President in 1952, he believed hiring practices and anti-discrimination laws should be decided by the states, although the administration gradually continued to desegregate the Armed Forces and the federal government.:50 The President also established the Government Contract Committee in 1953, which "conducted surveys of the racial composition of federal employees and tax-supported contractors".:5051 The committee, chaired by Vice President Richard Nixon, had minimal outcomes in that they imposed the contractors with the primary responsibility of desegregation within their own companies and corporations.:51

What was the main purpose of the Government Contract Committee?
What is the answer?
ANS: conducted surveys of the racial composition of federal employees and tax-supported contractors

QUES: The risk of reactivation increases with immunosuppression, such as that caused by infection with HIV. In people coinfected with M. tuberculosis and HIV, the risk of reactivation increases to 10% per year. Studies using DNA fingerprinting of M. tuberculosis strains have shown reinfection contributes more substantially to recurrent TB than previously thought, with estimates that it might account for more than 50% of reactivated cases in areas where TB is common. The chance of death from a case of tuberculosis is about 4% as of 2008, down from 8% in 1995.
As immunosuppression goes up in tuberculosis cases, what risk rises with it?

ANS: reactivation

On September 6, 2006, Sony announced that PAL region PlayStation 3 launch would be delayed until March 2007, because of a shortage of materials used in the Blu-ray drive. At the Tokyo Game Show on September 22, 2006, Sony announced that it would include an HDMI port on the 20 GB system, but a chrome trim, flash card readers, silver logo and Wi-Fi would not be included. Also, the launch price of the Japanese 20 GB model was reduced by over 20%, and the 60 GB model was announced for an open pricing scheme in Japan. During the event, Sony showed 27 playable PS3 games running on final hardware.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): How many playable games did the PlayStation 3 by the time it arrived at the 2006 Tokyo Game Show?
Ah, so.. 27

Question: With the rise of disco in the US and punk rock in the UK, hard rock's mainstream dominance was rivalled toward the later part of the decade. Disco appealed to a more diverse group of people and punk seemed to take over the rebellious role that hard rock once held. Early punk bands like The Ramones explicitly rebelled against the drum solos and extended guitar solos that characterised stadium rock, with almost all of their songs clocking in around two minutes with no guitar solos. However, new rock acts continued to emerge and record sales remained high into the 1980s. 1977 saw the debut and rise to stardom of Foreigner, who went on to release several platinum albums through to the mid-1980s. Midwestern groups like Kansas, REO Speedwagon and Styx helped further cement heavy rock in the Midwest as a form of stadium rock. In 1978, Van Halen emerged from the Los Angeles music scene with a sound based around the skills of lead guitarist Eddie Van Halen. He popularised a guitar-playing technique of two-handed hammer-ons and pull-offs called tapping, showcased on the song "Eruption" from the album Van Halen, which was highly influential in re-establishing hard rock as a popular genre after the punk and disco explosion, while also redefining and elevating the role of electric guitar.
Try to answer this question if possible: Who was highly influential in creating the popularity of punk and disco music?
Answer: unanswerable

Question: NARA also maintains the Presidential Library system, a nationwide network of libraries for preserving and making available the documents of U.S. presidents since Herbert Hoover. The Presidential Libraries include:
Try to answer this question if possible: What is the system that Herbert Hoover founded?
Answer:
unanswerable