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 ":".
Another
factor
why
more
and
more
people
are
purchasing
expired
domains
is
solely
for
the
traffic
they
generate
.
Another:O
factor:O
why:O
more:O
and:O
more:O
people:O
are:O
purchasing:O
expired:O
domains:O
is:O
solely:O
for:O
the:O
traffic:O
they:O
generate:O
.:O