Problem: Immunology:

In the mid-1950s, Frank Burnet, inspired by a suggestion made by Niels Jerne, formulated the clonal selection theory (CST) of immunity. On the basis of CST, Burnet developed a theory of how an immune response is triggered according to the self/nonself distinction: "self" constituents (constituents of the body) do not trigger destructive immune responses, while "nonself" entities (e.g., pathogens, an allograft) trigger a destructive immune response. The theory was later modified to reflect new discoveries regarding histocompatibility or the complex "two-signal" activation of T cells. The self/nonself theory of immunity and the self/nonself vocabulary have been criticized, but remain very influential.

In CST, what triggers a destructive immune response?
---
A: "nonself" entities (e.g., pathogens, an allograft)

Problem: Arena Football League:

For the 2011 season, the Philadelphia Soul, Kansas City Brigade, San Jose SaberCats, New Orleans VooDoo, and the Georgia Force returned to the AFL after having last played in 2008. However, the Grand Rapids Rampage, Colorado Crush, Columbus Destroyers, Los Angeles Avengers, and the New York Dragons did not return. The league added one expansion team, the Pittsburgh Power. Former Pittsburgh Steelers wide receiver Lynn Swann was one of the team's owners. It was the first time the AFL returned to Pittsburgh since the Pittsburgh Gladiators were an original franchise in 1987 before becoming the Tampa Bay Storm. The Brigade changed its name to the Command, becoming the Kansas City Command. Even though they were returning teams, the BossierShreveport Battle Wings moved to New Orleans as the Voodoo, the identity formerly owned by New Orleans Saints owner Tom Benson. The Alabama Vipers moved to Duluth, Georgia to become the new Georgia Force (the earlier franchise of that name being a continuation of the first Nashville Kats franchise). On October 25, 2010 the Oklahoma City Yard Dawgz did not return. The Milwaukee Iron also changed names to the Milwaukee Mustangs, the name of Milwaukee's original AFL team that had existed from 1994 to 2001.

Along with the New Orleans VooDoo, Kansas City Brigade, Philadelphia Soul and Georgia Force, what former team returned for the 2011 season?
---
A: San Jose SaberCats

Problem: Computer security:

One use of the term "computer security" refers to technology that is used to implement secure operating systems. In the 1980s the United States Department of Defense (DoD) used the "Orange Book" standards, but the current international standard ISO/IEC 15408, "Common Criteria" defines a number of progressively more stringent Evaluation Assurance Levels. Many common operating systems meet the EAL4 standard of being "Methodically Designed, Tested and Reviewed", but the formal verification required for the highest levels means that they are uncommon. An example of an EAL6 ("Semiformally Verified Design and Tested") system is Integrity-178B, which is used in the Airbus A380 and several military jets.

Who created the Common Criteria?
---
A: unanswerable

Problem: San Diego:

Many popular museums, such as the San Diego Museum of Art, the San Diego Natural History Museum, the San Diego Museum of Man, the Museum of Photographic Arts, and the San Diego Air & Space Museum are located in Balboa Park, which is also the location of the San Diego Zoo. The Museum of Contemporary Art San Diego (MCASD) is located in La Jolla and has a branch located at the Santa Fe Depot downtown. The downtown branch consists of two building on two opposite streets. The Columbia district downtown is home to historic ship exhibits belonging to the San Diego Maritime Museum, headlined by the Star of India, as well as the unrelated San Diego Aircraft Carrier Museum featuring the USS Midway aircraft carrier.

What space-focused museum is in Rocky Balboa Park?
---
A:
unanswerable