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 ":".
Sales
reached
one
million
in
1979
.
Sales:O
reached:O
one:O
million:O
in:O
1979:O
.:O