Indeed , Merrill is the biggest employer and taxpayer in Plainsboro , a fast-developing town in Middlesex County that clings to Princeton , in Mercer County , from across busy Route 1 .
Mercer County /location/location/contains Princeton
RB , NNP VBZ DT JJS NN CC NN IN NNP , DT JJ NN IN NNP NNP WDT VBZ TO NNP , IN NNP NNP , IN IN JJ NN CD .
Mercer County
LOCATION
Princeton
ORGANIZATION
/location/location/contains