The problem might have never been uncovered except for an error made in a laboratory in Vancouver , British Columbia , in late February .
British Columbia /location/location/contains Vancouver
DT NN MD VB RB VBN VBN IN IN DT NN VBN IN DT NN IN NNP , NNP NNP , IN JJ NNP .
British Columbia
LOCATION
Vancouver
LOCATION
/location/location/contains