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 ":".
After
the
river
the
freeway
has
an
interchange
with
US
52/IL
53
.
After:O
the:O
river:O
the:O
freeway:O
has:O
an:O
interchange:O
with:O
US:location-GPE
52/IL:location-GPE
53:location-GPE
.:O