How many districts does Ed Jones represent?
{'header': ['District', 'Incumbent', 'Party', 'First elected', 'Result', 'Candidates'], 'page_title': 'United States House of Representatives elections, 1970', 'section_title': '', 'caption': '', 'rows': [['Tennessee 4', 'Joe L. Evins', 'Democratic', '1946', 'Re-elected', 'Joe L. Evins (D) 82.6% J. D. Boles (R) 17.4%'], ['Tennessee 5', 'Richard Fulton', 'Democratic', '1962', 'Re-elected', 'Richard Fulton (D) 70.6% George Kelly (R) 29.4%'], ['Tennessee 6', 'William Anderson', 'Democratic', '1964', 'Re-elected', 'William Anderson (D) 81.7% Elmer Davies (R) 18.3%'], ['Tennessee 7', 'Ray Blanton', 'Democratic', '1966', 'Re-elected', 'Ray Blanton (D) 74.2% W. G. Doss (R) 25.8%'], ['Tennessee 8', 'Ed Jones', 'Democratic', '1969', 'Re-elected', 'Ed Jones (D) Unopposed']]}