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 ":".
Although
it
came
with
some
hardware
,
it
was
the
software
which
was
the
basis
of
the
product
.
Although:O
it:O
came:O
with:O
some:O
hardware:O
,:O
it:O
was:O
the:O
software:O
which:O
was:O
the:O
basis:O
of:O
the:O
product:O
.:O