Detailed Instructions: 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.
Problem:Question: What is the population of the city where Filip worked after working with Odo? Passage:He was the son of a merchant, Adolf Abraham Eisenberg, and Ester nee Spiro. After finishing Sobieski Gymnasium in Krakow he studied medicine at the Jagiellonian University, where he obtained his PhD in medical studies in 1899. He then conducted postgraduate work in Vienna with Richard Paltauf and between 1901 and 1902 served as a research assistant to Odo Bujwid. Subsequently he worked in Paris, at the Pasteur Institute and then in Wrocaw (Breslau) under the direction of Richard Pfeiffer. Between 1919 and 1920 he was the head of a Military Hospital in Warsaw. In 1933 he became the director of the National Bacteriology Station in Krakow, a position he held until 1939. Until 1941 he was the head of the Institute of Medical Microbiology in Lwow (L'viv).

Solution:
b