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 ":".
For
a
while
the
monastery
remained
uninhabited
.
For:O
a:O
while:O
the:O
monastery:O
remained:O
uninhabited:O
.:O