This task is about writing a correct answer for the reading comprehension task. Based on the information provided in a given passage, you should identify the shortest continuous text span from the passage that serves as an answer to the given question. Avoid answers that are incorrect or provides incomplete justification for the question.

[EX Q]: Passage: After a new wave of UN sanctions, on 11 March 2013, North Korea claimed that it had invalidated the 1953 armistice. On 13 March 2013, North Korea confirmed it ended the 1953 Armistice and declared North Korea "is not restrained by the North-South declaration on non-aggression". On 30 March 2013, North Korea stated that it had entered a "state of war" with South Korea and declared that "The long-standing situation of the Korean peninsula being neither at peace nor at war is finally over". Speaking on 4 April 2013, the U.S. Secretary of Defense, Chuck Hagel, informed the press that Pyongyang had "formally informed" the Pentagon that it had "ratified" the potential usage of a nuclear weapon against South Korea, Japan and the United States of America, including Guam and Hawaii. Hagel also stated that the United States would deploy the Terminal High Altitude Area Defense anti-ballistic missile system to Guam, because of a credible and realistic nuclear threat from North Korea. Question: How does the United States view North Korea's threats? 
[EX A]: credible and realistic nuclear threat

[EX Q]: Passage: Beyoncé's music is generally R&B, but she also incorporates pop, soul and funk into her songs. 4 demonstrated Beyoncé's exploration of 90s-style R&B, as well as further use of soul and hip hop than compared to previous releases. While she almost exclusively releases English songs, Beyoncé recorded several Spanish songs for Irreemplazable (re-recordings of songs from B'Day for a Spanish-language audience), and the re-release of B'Day. To record these, Beyoncé was coached phonetically by American record producer Rudy Perez. Question: What style of music does Beyoncé usually perform?
[EX A]: R&B

[EX Q]: Passage: Garry Trudeau, creator of the political Doonesbury comic strip, attended Yale University. There he met fellow student and later Green Party candidate for Congress Charles Pillsbury, a long-time New Haven resident for whom Trudeau's comic strip is named. During his college years, Pillsbury was known by the nickname "The Doones". A theory of international law, which argues for a sociological normative approach in regards to jurisprudence, is named the New Haven Approach, after the city. Connecticut US senator Richard Blumenthal is a Yale graduate, as is former Connecticut US Senator Joe Lieberman who also was a New Haven resident for many years, before moving back to his hometown of Stamford. Question: What is the name of the international law theory, grounded in jurisprudence framed by a sociological normative approach?
[EX A]:
the New Haven Approach