You will be given a definition of a task first, then some input of the task.
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.

Question: Are there any large bodies of water in the place Li Chong ran away to? Passage:In 60 BC, an internal disturbance occurred among the Xiongnu ruling clique, and Xianxianshan, Prince Rizhu of the Xiongnu stationed in the Turpan Basin, led 12,000 of his troops and 12 royals to pledge allegiance to the Han imperial court. That same year, the Han appointed Zheng Ji as the Protector General of the Western Regions, with his office in Wulei (near Qiuci) to oversee the entire region of the Tarim Basin west to the Pamir. The last Protector General, Dan Qin, was killed during a rebellion led by Yanqi in 13 AD. A brief attempt to restore the protector generalship was launched by Wang Mang in 16 AD, under the new appointed Protector General Li Chong. The armies soon advanced towards the state of Yanqi, but were eventually defeated by Yanqi with its allies. Li Chong fled to the state of Qiuci, and died soon after the fall of Xin Dynasty.

Output:
b