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 ":".
He
twice
appealed
without
success
.
He:O
twice:O
appealed:O
without:O
success:O
.:O