Complex sentence: Sir John Leake (4 July 1656--21 August 1720) was an English Admiral in the Royal Navy and a politician who sat in the House of Commons from 1708 to 1715.
Split into simpler sentences: Sir John Leake (4 July 1656--21 August 1720) was an English flag officer and politician during the later seventeenth and early eighteenth centuries. Leake, a full admiral, served in the House of Commons from 1708 to 1715.