How many teams have a player named Denis Andersen?
{'header': ['Pick #', 'Player', 'Position', 'Nationality', 'NHL team', 'College/junior/club team'], 'page_title': '1973 NHL Amateur Draft', 'section_title': 'Round seven', 'caption': 'Round seven', 'rows': [['97', 'Don Cutts', 'Goaltender', 'Canada', 'New York Islanders', 'Rensselaer Polytechnic Institute (NCAA)'], ['98', 'Paul Tantardini', 'Left Wing', 'Canada', 'California Golden Seals', 'Downsview Bombers (OPJHL)'], ['99', 'Clay Hebenton', 'Goaltender', 'Canada', 'Vancouver Canucks', 'Portland Winter Hawks WCJHL'], ['100', 'Dan Follet', 'Goaltender', 'Canada', 'Toronto Maple Leafs', 'Downsview Bombers (OPJHL)'], ['101', 'Tom Machowski', 'Defence', 'United States', 'Atlanta Flames', 'University of Wisconsin (NCAA)'], ['102', 'Roly Kimble', 'Goaltender', 'Canada', 'Los Angeles Kings', 'Hamilton Red Wings (OHA)'], ['103', 'Terry Ewasiuk', 'Left Wing', 'Canada', 'Pittsburgh Penguins', 'Victoria Cougars (WCHL)'], ['104', 'John Wensink', 'Left Wing', 'Canada', 'St. Louis Blues', 'Cornwall Royals (QMJHL)'], ['105', 'Lou Nistico', 'Centre', 'Canada', 'Minnesota North Stars', 'London Knights (OHA)'], ['106', 'Tom Young', 'Defence', 'Canada', 'Philadelphia Flyers', 'Sudbury Wolves (OHA)'], ['107', 'Brian Middleton', 'Defence', 'Canada', 'Detroit Red Wings', 'University of Alberta (CIAU)'], ['108', 'Bob Young', 'Defence', 'United States', 'Buffalo Sabres', 'University of Denver (NCAA)'], ['109', 'Wayne Dye', 'Left Wing', 'Canada', 'Chicago Black Hawks', 'New Westminster Bruins (WCHL)'], ['110', 'Denis Andersen', 'Defence', 'Canada', 'New York Islanders', 'New Westminster Bruins (WCHL)'], ['111', 'Walter Johnson', 'Right Wing', 'United States', 'Boston Bruins', 'Oshawa Generals (OHA)'], ['112', 'Michel Belisle', 'Centre', 'Canada', 'Montreal Canadiens', 'Montreal Junior Canadiens (QMJHL)']]}