With no explanation, label each line with "O", "person-director", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Two
music
videos
for
the
song
were
released
;
the
first
one
was
directed
by
Im
Seong-gwan
and
was
premiered
simultaneously
with
the
release
of
the
single
.
Two:O
music:O
videos:O
for:O
the:O
song:O
were:O
released:O
;:O
the:O
first:O
one:O
was:O
directed:O
by:O
Im:person-director
Seong-gwan:person-director
and:O
was:O
premiered:O
simultaneously:O
with:O
the:O
release:O
of:O
the:O
single:O
.:O