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 ":".
Only
one
of
approximately
300
people
aboard
survived
.
Only:O
one:O
of:O
approximately:O
300:O
people:O
aboard:O
survived:O
.:O