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 ":".
Weekend-only
operations
ended
on
March
16
,
1932
.
Weekend-only:O
operations:O
ended:O
on:O
March:O
16:O
,:O
1932:O
.:O