Tonight's heat comes from the University of Leicester, where we welcome four contestants from Northern Ireland. Depth of knowledge, concentration, and nerves of steel will help one of them to find a place in the Semi-final round.Contestants are:Robert Dunbar, Teacher - Life and work of Samuel BecketLisa Duffin, Librarian - 17th-century MathematiciansOliver Ferguson, Teacher - Geography of South East AsiaRodney Smith, Teacher - 20th-century British Politics