Q: 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: In what country is the bridge that the whales were initially hesitant to pass under? Passage:On May 20, after languishing for six days in the Sacramento Deep Water Ship Channel, the whales finally started moving. They were spotted the next day about downstream, just upriver from Rio Vista, where they lingered for several days, seemingly hesitant to pass under the Rio Vista Bridge. On May 27 they were on the move again and were spotted the next day another downstream in the saltier waters of Suisun Bay, just or so from the ocean, but again their circling movements seemed to indicate a reluctance to pass beneath a bridge, actually a trio of bridges this time at Benicia. On May 29, however, they again moved quickly, passing under the Benicia Bridge in the morning and swimming through the Carquinez Strait and past yet another pair of bridges. By late afternoon they had continued through San Pablo Bay and were circling just beyond the Richmond-San Rafael Bridge near Tiburon. They were last spotted at sunset that night, within of the Golden Gate Bridge and the open ocean beyond.

A:
b