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 ":".
Since
then
,
the
Bluetooth
technology
has
been
incorporated
in
many
top-of-the-line
models
.
Since:O
then:O
,:O
the:O
Bluetooth:O
technology:O
has:O
been:O
incorporated:O
in:O
many:O
top-of-the-line:O
models:O
.:O