Given the task definition and input, reply with output. 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: Which SFO productions that Li were involved with made the most money? Passage:Li made his professional opera debut in 2011 with the SFO as Le Dancaire in Georges Bizet's Carmen. His subsequent appearances with the SFO include Ascanio Petrucci in Lucrezia Borgia (2011), Lorenzo in I Capuleti e i Montecchi (2012), Sciarrone in Tosca (2012), The Indian Gardener / Ben Weatherstaff in the world premiere of Nolan Gasser's The Secret Garden (2013), and both Fiorello and Don Basilio in The Barber of Seville (2013). He was also a featured soloist in a 2013 concert honoring mezzo-soprano Zheng Cao at the San Francisco War Memorial and Performing Arts Center. He has also appeared at the Seoul Arts Centre in Korea as Gremin in Eugene Onegin, and appeared in that same opera as the Captain of the Guards at the National Centre for the Performing Arts in Beijing in 2014. In 2015 he created the role of Male Soloist No. 4 in the world premiere of Huang Ruo's Paradise Interrupted at the Spoleto Festival USA.
a