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 ":".
Passenger
services
are
provided
by
Class
628
multiples
.
Passenger:O
services:O
are:O
provided:O
by:O
Class:O
628:O
multiples:O
.:O