The other officer returned the fire , and the driver , a 36-year-old Trenton man , was killed , the Mercer County prosecutor 's office said .
Mercer County /location/location/contains Trenton
DT JJ NN VBD DT NN , CC DT NN , DT JJ NNP NN , VBD VBN , DT NNP NNP NN POS NN VBD .
Mercer County
LOCATION
Trenton
LOCATION
/location/location/contains