With no explanation, label each line with "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Tolls
were
collected
in
both
directions
at
a
plaza
in
East
Hartford
.
Tolls:O
were:O
collected:O
in:O
both:O
directions:O
at:O
a:O
plaza:O
in:O
East:location-GPE
Hartford:location-GPE
.:O