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 ":".
In
1967
waste
collection
was
reorganized
.
In:O
1967:O
waste:O
collection:O
was:O
reorganized:O
.:O