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
April
1993
,
the
album
had
sold
over
three
million
copies
worldwide
.
By:O
April:O
1993:O
,:O
the:O
album:O
had:O
sold:O
over:O
three:O
million:O
copies:O
worldwide:O
.:O