What league does the team with the nickname Cavaliers belong to
{'header': ['School', 'Nickname', 'Colors', 'League', 'Class', 'Division'], 'page_title': 'High school ice hockey in Delaware', 'page_id': '', 'types': ['text', 'text', 'text', 'text', 'text', 'text'], 'id': '1-15475116-1', 'section_title': 'Delaware Ice Hockey Teams', 'caption': 'Delaware Ice Hockey Teams', 'rows': [['Alexis I. duPont High School', 'Tigers', 'Blue and Yellow', 'DSHA', 'Flight A', 'Division 1'], ['Archmere Academy', 'Auks', 'Dark Green and White', 'DSHA', 'Flight B', 'Division 3'], ['Caravel Academy', 'Buccaneers', 'Garnet and White', 'DSHA', 'Fight A', 'Division 1'], ['Concord High School', 'Raiders', 'Maroon and White', 'DSHA', 'Flight B', 'Division 3'], ['Delaware Military Academy', 'Seahawks', 'Blue and Gold', 'DSHA', 'Flight B', 'Division 2'], ['Hodgson Vo-Tech High School', 'Silver Eagles', 'Silver and Maroon', 'DSHA', 'Flight B', 'Division 3'], ['Middletown High School', 'Cavaliers', 'Blue and White', 'DSHA', 'Flight B', 'Division 2'], ['Newark High School', 'Yellowjackets', 'Black, Gold and White', 'DSHA', 'Flight A', 'Division 1'], ['Salesianum', 'Sals', 'Gold and White', 'ICSHL', 'AAA', 'N/A'], ['St. Elizabeth High School', 'Vikings', 'Maroon, Gold and White', 'DSHA', 'Flight B', 'Division 2'], ["St. Mark's High School", 'Spartans', 'Green and White', 'DSHA', 'Flight A', 'Division 1']], 'name': 'table_15475116_1'}