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: How long did Pietro Tacchini spend in India? Passage:Italian astronomer Pietro Tacchini led an expedition to Muddapur, India. Other locations in India from where the transit was observed included Roorkee, and Visakhapatnam. The German astronomer Hugo von Seeliger directed an expedition that travelled to the Auckland Islands (subantarctic New Zealand islands). German astronomers also travelled to Isfahan in Persia, and to Kerguelen. The Dutch astronomer Jean Abraham Chrétien Oudemans made observations from Réunion, and observations were also made from various points in the Dutch East Indies. Austrian astronomers made observations from Jassy, in what is now Romania. The Russian astronomer Otto Wilhelm von Struve organised expeditions to make observations in eastern Asia, the Caucasus, Persia and Egypt. Two Mexican expeditions travelled to Yokohama in Japan.


b