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 ":".
She
served
for
two
weeks
.
She:O
served:O
for:O
two:O
weeks:O
.:O