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.
Q: Question: How old was the army captain who met with Yuman leaders when they negotiated a peace? Passage:In November 1850, United States Army Captain Samuel P. Heintzelman met with Yuman leaders at the Salton Sea to negotiate a peace. Apparently successful, the captain returned to Vallecitos where he began preparing for his new orders which were to establish a post at Yuma Crossing to protect the area from outlaws and hostile natives. The column, thinned by desertions of soldiers to the goldfields, left San Diego on October 3, 1850 with about 100 men of the 2nd Infantry while a fourth company marched to build a post with a warehouse at Vallecitos, as a supply depot for the Yuma post. The expedition reached Yuma Crossing on November 27, and began the construction of Camp Yuma, then just a camp of tents, a hospital and an orchard. American forces included ninety-two enlisted men, two officers and a medical officer for the hospital. Heintzelman's command was supplied via steamship from California, through the California Gulf and up the Colorado to the fort. This was difficult however due to the Colorado's strong current and by the time the steamships could make it all the way around Baja California, they had to manage the Colorado which took time. Thus the Californians had to rely on supplies sent overland, it was difficult as well but proved to be successful.

A:
b