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 ":".
This
service
is
provided
by
208
employees
.
This:O
service:O
is:O
provided:O
by:O
208:O
employees:O
.:O