Larger than even the Amazon , North America 's boreal zone is one of the biggest intact ecosystems left on the planet , with 1.4 billion acres in Canada alone , most of it still in immense , interlocking tracts that make up a quarter of the earth 's remaining original forest .
North America /location/location/contains Canada
JJR IN RB DT NNP , NNP NNP POS JJ NN VBZ CD IN DT JJS JJ NNS VBD IN DT NN , IN CD CD NNS IN NNP RB , JJS IN PRP RB IN JJ , VBG NNS WDT VBP RP DT NN IN DT NN POS VBG JJ NN .
North America
LOCATION
Canada
LOCATION
/location/location/contains