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 ":".
Kral
also
added
synthesizer
and
keyboards
to
the
track
.
Kral:O
also:O
added:O
synthesizer:O
and:O
keyboards:O
to:O
the:O
track:O
.:O