who is the prime minister of quintin hogg who is also the minister of harold watkinson ?
SELECT DISTINCT var_uri where brack_open dbr_Quintin_Hogg,_Baron_Hailsham_of_St_Marylebone dbp_primeminister var_uri sep_dot dbr_Harold_Watkinson,_1st_Viscount_Watkinson dbo_primeMinister var_uri brack_close