Input: Read this: By August, the KPA had pushed back the ROK Army and the Eighth United States Army to the vicinity of Pusan in southeast Korea. In their southward advance, the KPA purged the Republic of Korea's intelligentsia by killing civil servants and intellectuals. On 20 August, General MacArthur warned North Korean leader Kim Il-sung that he was responsible for the KPA's atrocities. By September, the UN Command controlled the Pusan perimeter, enclosing about 10% of Korea, in a line partially defined by the Nakdong River.
Question: What body of water provided a natural border to the UN command-controlled Pusan perimeter?

Output: Nakdong River


QUES: In the 1500s a new type of armor started to become popular due to the advent of firearms, new fighting tactics and the need for additional protection. The kozane dou made from individual scales was replaced by plate armor. This new armor, which used iron plated dou (dō), was referred to as Tosei-gusoku, or modern armor. Various other components of armor protected the samurai's body. The helmet kabuto was an important part of the samurai's armor. Samurai armor changed and developed as the methods of samurai warfare changed over the centuries. The known last use of samurai armor occurring in 1877 during the satsuma rebellion. As the last samurai rebellion was crushed, Japan modernized its defenses and turned to a national conscription army that used uniforms.

What new type of armor replaced the old?
What is the answer?
ANS: plate armor


QUES: The 'OtherOS' functionality was not present in the updated PS Slim models, and the feature was subsequently removed from previous versions of the PS3 as part of the machine's firmware update version 3.21 which was released on April 1, 2010; Sony cited security concerns as the rationale. The firmware update 3.21 was mandatory for access to the PlayStation Network. The removal caused some controversy; as the update removed officially advertised features from already sold products, and gave rise to several class action lawsuits aimed at making Sony return the feature or provide compensation.
Was firmware update 3.12 optional or mandatory if users wanted to continue accessing the PS Network?

ANS: unanswerable


To promote the film, production continued the trend established during Skyfall's production of releasing still images of clapperboards and video blogs on Eon's official social media accounts.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Production released text blogs to do what?
Ah, so.. unanswerable


Question: In modern times, the name "cardinal priest" is interpreted as meaning a cardinal who is of the order of priests. Originally, however, this referred to certain key priests of important churches of the Diocese of Rome, who were recognized as the cardinal priests, the important priests chosen by the pope to advise him in his duties as Bishop of Rome (the Latin cardo means "hinge"). Certain clerics in many dioceses at the time, not just that of Rome, were said to be the key personnel — the term gradually became exclusive to Rome to indicate those entrusted with electing the bishop of Rome, the pope.
Try to answer this question if possible: What name was interpreted as meaning a cardinal who is of the order of popes?
Answer: unanswerable


Input: Read this: Protestantism is a form of Christian faith and practice which originated with the Protestant Reformation,[a] a movement against what its followers considered to be errors in the Roman Catholic Church. It is one of the three major divisions of Christendom, together with Roman Catholicism and Eastern Orthodoxy. Anglicanism is sometimes considered to be independent from Protestantism.[b] The term derives from the letter of protestation from Lutheran princes in 1529 against an edict condemning the teachings of Martin Luther as heretical.
Question: Who wrote a letter protesting the condemnation of Martin Luther?

Output:
Lutheran princes