Definition: 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.
Input: Question: Who was older out of Jie Zitui and Prince Chong'er in 655? Passage:The festival originated from the Cold Food or Hanshi Festival which remembered Jie Zitui, a nobleman of the state of Jin (modern Shanxi) during the Spring and Autumn Period. Amid the Li Ji Unrest, he followed his master Prince Chong'er in 655 to exile among the Di tribes and around China. Supposedly, he once even cut meat from his own thigh to provide his lord with soup. In 636, Duke Mu of Qin invaded Jin and enthroned Chong'er as its duke, where he was generous in rewarding those who had helped him in his time of need. Owing either to his own high-mindedness or to the duke's neglect, however, Jie was long passed over. He finally retired to the forest around Mount Mian with his elderly mother. The duke went to the forest in but could not find them. He then ordered his men to set fire to the forest in order to force Jie out. When Jie and his mother were killed instead, the duke was overcome with remorse and erected a temple in his honor. The people of Shanxi subsequently revered Jie as an immortal and avoided lighting fires for as long as a month in the depths of winter, a practice so injurious to children and the elderly that the area's rulers unsuccessfully attempted to ban it for centuries. A compromise finally developed where it was restricted to 3 days around the Qingming solar term in mid-spring.


a