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 ":".
So
the
ballot
numbers
were
:
So:O
the:O
ballot:O
numbers:O
were:O
::O