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 ":".
A
third
transcript
variant
has
been
described
,
but
its
full
length
nature
has
not
been
determined
.
A:O
third:O
transcript:O
variant:O
has:O
been:O
described:O
,:O
but:O
its:O
full:O
length:O
nature:O
has:O
not:O
been:O
determined:O
.:O