Input: Article: On 18 September, Stalin dispatched General H. M. Zakharov to Korea to advise Kim Il-sung to halt his offensive around the Pusan perimeter and to redeploy his forces to defend Seoul. Chinese commanders were not briefed on North Korean troop numbers or operational plans. As the overall commander of Chinese forces, Zhou Enlai suggested that the North Koreans should attempt to eliminate the enemy forces at Inchon only if they had reserves of at least 100,000 men; otherwise, he advised the North Koreans to withdraw their forces north.

Now answer this question: Who was not being briefed on the operational plans or the number of troops in combat?

Output: Chinese commanders

Input: Article: For an unprecedented eight consecutive years, from the 200304 television season through the 201011 season, either its performance or result show had been ranked number one in U.S. television ratings. The popularity of American Idol however declined, and on May 11, 2015, Fox announced that the series would conclude its run in its fifteenth season.

Now answer this question: What year did FOX announce the cancellation of American Idol?

Output: 2015

Input: Article: A more sophisticated MP3 encoder can produce variable bitrate audio. MPEG audio may use bitrate switching on a per-frame basis, but only layer III decoders must support it. VBR is used when the goal is to achieve a fixed level of quality. The final file size of a VBR encoding is less predictable than with constant bitrate. Average bitrate is VBR implemented as a compromise between the two: the bitrate is allowed to vary for more consistent quality, but is controlled to remain near an average value chosen by the user, for predictable file sizes. Although an MP3 decoder must support VBR to be standards compliant, historically some decoders have bugs with VBR decoding, particularly before VBR encoders became widespread.

Now answer this question: Using VBR instead of a constant bit rate encoding makes which part of encoding less predictable?

Output:
final file size