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 ":".
By
1980
,
the
paper
was
losing
money
.
By:O
1980:O
,:O
the:O
paper:O
was:O
losing:O
money:O
.:O