The golden era of North America , in the eyes of today 's North Americans , was about 200 years ago , when bison roamed the Great Plains by the millions .
North America /location/location/contains Great Plains
DT JJ NN IN NNP NNP , IN DT NNS IN NN POS NNP NNPS , VBD RB CD NNS RB , WRB NN VBD DT JJ NNS IN DT NNS .
North America
LOCATION
Great Plains
LOCATION
/location/location/contains