Question: What episode was broadcast on BBC One on 12 April 2008 and starred an actress who would later play Nellie Bertram in the U.S. version of "The Office?"
{'answer': 'The Fires of Pompeii', 'supporting_facts': [['The Fires of Pompeii', 0], ['The Fires of Pompeii', 1], ['Catherine Tate', 3]]}