When 1472 was the elected when was the assembled?
{'header': ['No.', 'Summoned', 'Elected', 'Assembled', 'Dissolved', '1st member', '2nd member'], 'page_title': 'Bedford (UK Parliament constituency)', 'section_title': 'Parliaments of King Edward IV', 'caption': 'Parliaments of King Edward IV', 'rows': [['1st', '23 May 1461', '1461', '4 November 1461', '6 May 1462', 'unknown', 'unknown'], ['2nd', '22 December 1462', '1462/63', '29 April 1463', '28 March 1465', 'unknown', 'unknown'], ['3rd', '28 February 1467', '1467', '3 June 1467', '7 June 1468', 'John Boston', 'William Colet , jnr.'], ['4th', '19 August 1472', '1472', '6 October 1472', '14 March 1475', 'John Boston', 'Thomas Adams'], ['5th', '20 November 1477', '1477/78', '16 January 1478', '26 February 1478', 'William Colet', 'Thomas Adams']]}