In this task, you're given a question, along with a context passage which has extra information available on certain terms mentioned in it, i.e., the proper nouns in the passage. Your job is to determine whether information from more than one term is needed to answer the question. Indicate your choice as `a` for Yes or `b` for No.

Ex Input:
Question: How big is the National Park that the Yellowstone River flows northward through? Passage:The river rises in northwestern Wyoming in the Absaroka Range, on the Continental Divide in southwestern Park County. The river starts where the North Fork and the South Fork of the Yellowstone River converge. The North Fork, the larger of the two forks, flows from Younts Peak. The South Fork flows from the southern slopes of Thorofare Mountain. The Yellowstone River flows northward through Yellowstone National Park, feeding and draining Yellowstone Lake, then dropping over the Upper and Lower Yellowstone Falls at the head of the Grand Canyon of the Yellowstone within the confines of the park. After passing through the Black Canyon of the Yellowstone downstream of the Grand Canyon, the river flows northward into Montana between the northern Absaroka Range and the Gallatin Range in Paradise Valley. The river emerges from the mountains near the town of Livingston, where it turns eastward and northeastward, flowing across the northern Great Plains past the city of Billings.


Ex Output:
b


Ex Input:
Question: Did Manchester United win the league the season that Humphreys was voted Player of the Year? Passage:At the end of the 2007–08 season, Humphreys was voted Player of the Year, Player of the 2000s and Hartlepool United's Player of the Century. He continued to be a key player in 2008–09, making a total of 54 appearances. He was a key figure once again in the 2009–10 season, missing just nine matches as a central midfielder. On 26 February 2011, Humphreys replaced Joe Gamble after 82 minutes to make his 473rd appearance for "Pools". This broke the record previously held by Watty Moore for over half a century. Over the course of the 2010–11 season he played 29 matches. On 2 August 2011, Humphreys was given a testimonial match against Premier League Sunderland to mark his ten years at Hartlepool United. Sunderland won 3–1, though the 5,757 fans present at the Victoria Park were reported to be very vocal in their appreciation of the veteran player. On 7 January 2012, Humphreys replaced Luke James 90 minutes into a 2–0 win over Rochdale to make his 500th appearance for "Pools". He signed an "undisclosed extension to his contract" in May 2012. He made 33 appearances in the 2012–13 campaign, as Hartlepool were relegated into League Two, though Humphreys was named on the League One team of the week after scoring in a 3–2 win at Sheffield United on 29 December.


Ex Output:
b


Ex Input:
Question: What cities were the two founders of the Communist Party of China from? Passage:The Republic of China was founded by the Kuomintang (KMT) leader Dr. Sun Yat-sen in 1912. The Kuomintang's prior revolutionary political group, the Revive China Society, was founded on 24 November 1894. It later merged with various other revolutionary groups to form the Tongmenghui in 1905. In August 1911, the Tongmenghui further merged with various other political parties in Beijing to form the KMT. In July 1914, the KMT re-organized itself as the "Chinese Revolutionary Party" in Tokyo, Japan. In 1919, the party officially renamed itself as "Kuomintang of China", which literally translates to "Chinese Nationalist Party". It was China's first major political party. In 1921, the Communist Party of China (CPC) was founded by Chen Duxiu and Li Dazhao in Shanghai as a study society and an informal network. Slowly, the CPC began to grow. These were the two major political parties in China, during the time when the ROC ruled mainland China from 1911 to 1949.


Ex Output:

a