"capable of positively regulating" . _:b1214719 _:b1214718 . . . _:b1214719 . _:b1214718 . "renin -> arteriolar smooth muscle contraction" . _:b1214719 . . "Holds between c and p if and only if c is capable of some activity a, and a positively regulates p." . _:b1214718 .