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
developed
a
fever
,
but
recovered
.
He:O
developed:O
a:O
fever:O
,:O
but:O
recovered:O
.:O