With no explanation, label each line with "O", "building-airport", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-hospital" or "building-hotel" preceded by ":".
Halifax
International
Airport
reported
of
rainfall
over
30
hours
.
Halifax:building-airport
International:building-airport
Airport:building-airport
reported:O
of:O
rainfall:O
over:O
30:O
hours:O
.:O