With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
Wanted
posters
are
posted
at
all
stations
to
help
commuters
identify
known
thieves
.
Wanted:O
posters:O
are:O
posted:O
at:O
all:O
stations:O
to:O
help:O
commuters:O
identify:O
known:O
thieves:O
.:O