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 ":".
Three
transcript
variants
encoding
different
isoforms
have
been
described
for
this
gene
.
Three:O
transcript:O
variants:O
encoding:O
different:O
isoforms:O
have:O
been:O
described:O
for:O
this:O
gene:O
.:O