The source of the leak was apparently uncovered in Canada , after an investigation by the Canadian Broadcasting Corporation , which has a partnership with the BBC to broadcast the show in North America .
North America /location/location/contains Canada
DT NN IN DT NN VBD RB VBN IN NNP , IN DT NN IN DT JJ NNP NNP , WDT VBZ DT NN IN DT NNP TO VB DT NN IN NNP NNP .
North America
LOCATION
Canada
LOCATION
/location/location/contains