. _:b1214746 . _:b1214745 . "cjm"^^ . _:b1214746 _:b1214745 . . . . _:b1214745 . . "acts upstream of, negative effect" . "2018-01-26T23:53:22Z"^^ . "c 'acts upstream of, negative effect' p if c is enables f, and f is causally upstream of p, and the direction of f is negative" . _:b1214746 .