For years , opponents fought the efforts of the state of Montana to poison exotic fish like brook trout in Cherry Creek , a tributary of the Madison River , so that they could restore the imperiled native westslope cutthroat trout .
Montana /location/location/contains Madison River
IN NNS , NNS VBD DT NNS IN DT NN IN NNP TO NN JJ NN IN NN NNS IN NNP NNP , DT NN IN DT NNP NNP , RB IN PRP MD VB DT VBN JJ NN JJ NNS .
Montana
LOCATION
Madison River
LOCATION
/location/location/contains