With no explanation, label each line with "O", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
bridge
project
was
named
for
Natcher
only
three
months
before
his
death
.
The:O
bridge:O
project:O
was:O
named:O
for:O
Natcher:person-politician
only:O
three:O
months:O
before:O
his:O
death:O
.:O