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 big is Anthony Owen's current employer? Passage:Anthony 'Tony' David Owen is an economist and academic, currently employed as Emeritus Professor in Energy Economics at University College London Australia. He was appointed to the position in July 2013, and was previously Academic Director of the School of Energy and Resources at its campus in Adelaide, Australia. He also held the Santos Chair in Energy Resources at the time. He previously held positions at Curtin University of Technology and the University of New South Wales, and worked as a consultant and visiting appointee in North America, Europe and Asia. In 2007 he chaired the Inquiry into Electricity Supply in New South Wales. Owen wrote a book entitled The economics of uranium, which was published by Praeger in 1985. Since then, Owen has written periodically on the possibility of nuclear power in Australia, including for the Committee for Economic Development of Australia in 2011. His academic papers have featured in peer-reviewed journals such as Energy Policy, Economic Record, Agenda and the Journal of Nuclear Research and Development. He also edited the book The Economics of Climate Change with Nick Hanley which was published by Routledge, London in 2004.


b