what's the party with incumbent being herbert covington bonner
{'header': ['District', 'Incumbent', 'Party', 'First elected', 'Result', 'Candidates'], 'page_title': 'United States House of Representatives elections, 1958', 'section_title': '', 'caption': '', 'rows': [['North Carolina 1', 'Herbert Covington Bonner', 'Democratic', '1940', 'Re-elected', 'Herbert Covington Bonner (D) Unopposed'], ['North Carolina 2', 'Lawrence H. Fountain', 'Democratic', '1952', 'Re-elected', 'Lawrence H. Fountain (D) Unopposed'], ['North Carolina 6', 'Carl T. Durham', 'Democratic', '1938', 'Re-elected', 'Carl T. Durham (D) Unopposed'], ['North Carolina 7', 'Alton Lennon', 'Democratic', '1956', 'Re-elected', 'Alton Lennon (D) 89.0% C. Dana Malpass (R) 11.0%'], ['North Carolina 10', 'Charles R. Jonas', 'Republican', '1952', 'Re-elected', 'Charles R. Jonas (R) 51.9% David Clark (D) 48.1%']]}