who are the candidates where the incumbent is sam m. gibbons?
{'header': ['District', 'Incumbent', 'Party', 'First elected', 'Result', 'Candidates'], 'page_title': 'United States House of Representatives elections, 1978', 'section_title': '', 'caption': '', 'rows': [['Florida 2', 'Don Fuqua', 'Democratic', '1962', 'Re-elected', 'Don Fuqua (D) 81.7% Pete Brathwaite (R) 18.3%'], ['Florida 3', 'Charles Edward Bennett', 'Democratic', '1948', 'Re-elected', 'Charles Edward Bennett (D) Unopposed'], ['Florida 5', 'Richard Kelly', 'Republican', '1974', 'Re-elected', 'Richard Kelly (R) 51.1% David Ryan Best (D) 48.9%'], ['Florida 6', 'Bill Young', 'Republican', '1970', 'Re-elected', 'Bill Young (R) 78.8% Jim Christison (D) 21.2%'], ['Florida 7', 'Sam M. Gibbons', 'Democratic', '1962', 'Re-elected', 'Sam M. Gibbons (D) Unopposed'], ['Florida 8', 'Andy Ireland', 'Democratic', '1976', 'Re-elected', 'Andy Ireland (D) Unopposed'], ['Florida 9', 'Louis Frey, Jr.', 'Republican', '1968', 'Retired to run for Governor Democratic gain', 'Bill Nelson (D) 61.5% Edward J. Gurney (R) 38.5%'], ['Florida 10', 'Louis A. Bafalis', 'Republican', '1972', 'Re-elected', 'Louis A. Bafalis (R) Unopposed'], ['Florida 11', 'Paul Rogers', 'Democratic', '1954', 'Retired Democratic hold', 'Dan Mica (D) 55.3% Bill James (R) 44.7%'], ['Florida 13', 'William Lehman', 'Democratic', '1972', 'Re-elected', 'William Lehman (D) Unopposed']]}