In this task, you're given a question, along with a context passage. The passage will not have a direct answer to the question, but can include some information and a clue for the answer. Assuming you can only obtain information about one entity in the passage, your job is to determine whether information from the passage can be used to answer the question. Indicate your choice as `a` for Yes or `b` for No.

[Q]: Question: What year was the treaty that opened up the Korean Peninsula to Japanese trade signed? Passage:Un'yō  was one of the ships dispatched to Kyūshū in 1874 during the Saga Rebellion. In May 1875, she carried diplomats to Busan in Korea in an attempt by the Japanese government to open diplomatic relations with the Joseon dynasty government. After they were rebuffed in these negotiations, the Japanese government again dispatched Un'yō in September 1875 under the command of Inoue Yoshika to provoke a military response, in what was later termed the Ganghwa Island incident. This eventually led to the Treaty of Ganghwa, which opened the Korean Peninsula to Japanese trade. In 1876, Un'yō  was assigned to assist in the suppression of the Hagi Rebellion, another uprising of disaffected former samurai. Un'yō  was severely damaged when she ran aground off the coast of the Kii Peninsula, and was scrapped the following year.

[A]: b


[Q]: Question: What teams had the newly hired head coach and offensive co-ordinator for the Argonauts worked for previously? Passage:However, with the 1982 season came the hiring of Bob O'Billovich as head coach and Mouse Davis as offensive co-ordinator. Davis implemented the run and shoot offense, and the Argos enjoyed a turnaround, going 9–6–1 that year; Condredge Holloway was the CFL's most outstanding player. The team ultimately fell short in their quest for a Grey Cup, losing 32–16 in a driving rainstorm to the mighty Edmonton Eskimos (in what would be the last of their five consecutive Grey Cup titles) in the final in front of a disappointed crowd at Exhibition Stadium. The 1983 season finally brought the championship home. The Argos finished 12–4 and Terry Greer set a CFL record with 2,003 receiving yards. Joe Barnes and Condredge Holloway were a potent duo at quarterback. The Double Blue returned to the Grey Cup, this time facing the BC Lions at BC Place Stadium in Vancouver. Despite the hostile crowd, Toronto defeated BC 18–17 to win their first Grey Cup since 1952. The Argos were generally competitive for the remainder of the 1980s, thanks in large part to talented players such as Gill "The Thrill" Fenerty and Darrell K. Smith, but a return to the glory of 1983 proved elusive (outside of an appearance in the 1987 Grey Cup game, in which they lost in the last minute to the Edmonton Eskimos 38–36).

[A]: b


[Q]: Question: How long is the fault that lies to the east of Ice Mountain? Passage:Ice Mountain is an arc-shaped forested ridge of the Allegheny Mountains, part of the Ridge-and-valley Appalachians. It is above mean sea level at its summit. Ice Mountain is a large mass of Devonian Oriskany (Ridgeley) sandstone and Marcellus shale with numerous bare rock slopes and vertical cliffs. Ice Mountain lies on the west side of the Timber Mountain anticline and to the west of North Mountain fault, which places it on the Martinsburg allochthonous sheet. Ice Mountain is situated along North River and is known for the several hundred yards of ice that form at its base all year long. At its southern end overlooking the community of North River Mills is located Raven Rocks, a set of stone chimney outcrops. Raven Rocks is in height above mean sea level with vertical cliffs measuring nearly in height. Raven Rocks were named because of the presence of ravens during pioneer days. The present Raven Rocks is the remaining vestige of a once towering cliff that overlooked the North River. Geologically, Ice Mountain is a northern extension of North River Mountain.

[A]:
a