In this task, you're given a question, along with a context passage. The passage will not have a direct answer to the question, but can include some information and a clue for the answer. Assuming you can only obtain information about one entity in the passage, your job is to determine whether information from the passage can be used to answer the question. Indicate your choice as `a` for Yes or `b` for No.

Question: When was Proffesor Rizvi the Director of the Ash Center for Democratic Governance and Innovation? Passage:Gowher Rizvi was at St. Antony's College, Oxford as the Alfred Beit Junior Lecturer and Senior Associate Member from 1976 to 1978. From 1979 to 1981 he taught History at Balliol College, Oxford. He was MacArthur Scholar and Fellow in Politics and International Relations at Nuffield College, Oxford from 1988 to 1994. In 1992, he collaborated with the Royal Institute of International Affairs to organize a high-level Anglo-Iranian Roundtable in order to facilitate direct dialogue between senior officials of the two countries. In the same year he taught as Arnold Bernhard Visiting Professor of History at Williams College, Massachusetts. From 1994 to 1995 Professor Rizvi served as the Director of Contemporary Affairs at the Asia Society in New York. In 1995 he joined the Ford Foundation as the deputy director for governance and civil society . In 1998 to 2002 he was appointed the Ford Foundation Representative to New Delhi with responsibilities for directing the foundation's activities in South Asia. From 2002 to 2008 he was a lecturer of Public Policy at Harvard Kennedy School. He was also Director of the Ash Center for Democratic Governance and Innovation. In 2008 he was appointed vice provost for international programs at the University of Virginia. In 2009 he has become the International Affairs adviser to Sheikh Hasina Prime Minister of Bangladesh.

a