SRL for [extract]: But above all , this is the national headquarters for boiler - room operators , those slick - talking snake - oil salesmen who use the telephone to [extract] money from the gullible and the greedy and then vanish .
R-ARG-0: who | ARG-0: those slick - talking snake - oil salesmen | ARG-1: money | ARG-2: from the gullible and the greedy