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 ":".
This
version
was
briefly
available
for
television
in
the
1970s
,
but
was
believed
to
be
lost
.
This:O
version:O
was:O
briefly:O
available:O
for:O
television:O
in:O
the:O
1970s:O
,:O
but:O
was:O
believed:O
to:O
be:O
lost:O
.:O