With no explanation, label each line with "product-other", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Pop-out
feet
were
used
instead
of
the
rotating
rocker-style
feet
typical
of
earlier
PowerBooks
,
and
a
slightly
darker
shade
of
grey
was
used
for
the
plastic
casing
.
Pop-out:O
feet:O
were:O
used:O
instead:O
of:O
the:O
rotating:O
rocker-style:O
feet:O
typical:O
of:O
earlier:O
PowerBooks:product-other
,:O
and:O
a:O
slightly:O
darker:O
shade:O
of:O
grey:O
was:O
used:O
for:O
the:O
plastic:O
casing:O
.:O