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 ":".
The
initial
version
used
either
available
serial
port
as
the
communications
channel
.
The:O
initial:O
version:O
used:O
either:O
available:O
serial:O
port:O
as:O
the:O
communications:O
channel:O
.:O