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: Which co-creator of The New Adeventures of Pinocchio is the oldest? Passage:The New Adventures of Pinocchio is a syndicated stop motion animated television series produced by Rankin/Bass Productions in the United States and made by Dentsu Studios in Japan. Created by Arthur Rankin, Jr. and his partner Jules Bass, it was based on the book The Adventures of Pinocchio written by Italian author, Carlo Collodi. The series was Rankin/Bass' first production to be made in "Animagic", a stop motion puppet technique which, in association with the company, was done by Tadahito Mochinaga's MOM Productions (before Mochinaga leaves for China after the finished animation for Mad Monster Party?). A total of 130 five-minute "chapters" were produced in 1960–61. These segments made up a series of five-chapter, 25-minute episodes. During 1963–64, the series was also aired in Japan on Fuji TV as part of another stop motion TV series, Prince Ciscorn (シスコン王子, lit. Ciscorn Ōji), based on the manga by Fujiko Fujio and also produced by Tadahito Mochinaga for Studio KAI and Dentsu.


Ex Output:
a


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: Which countries signed the Warsaw Pact? Passage:Through the Cold War, the United States, Soviet Union and other countries contemplated the possibility of nuclear warfare. While previous technology had developed to protect the crews of armored vehicles from projectiles and from explosive damage; the possibility of radiation arose. In the NATO countries little if any development took place on defining a doctrine of how to use armed forces without the use of tactical nuclear weapons. In the Soviet sphere of influence the legacy doctrine of operational maneuver was being theoretically examined to understand how a tank-led force could be used even with the threat of limited use of nuclear weapons on prospective European battlefields. The Warsaw Pact arrived at the solution of maneuver warfare while massively increasing the number of anti-tank weapons. To achieve this, Soviet military theorists such as Vasily Sokolovsky (1897-1968) realized that anti-tank weapons had to assume an offensive role rather than the traditionally defensive role of the Great Patriotic War (1941-1945) by becoming more mobile. This led to the development of improved guided anti-tank missiles, though similar design work was being performed in Western Europe and the United States.


Ex Output:

b