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 ":".
By
December
1987
,
for
example
,
an
Apple
IIGS
user
could
view
pictures
created
on
an
Atari
ST
or
Commodore
64
.
By:O
December:O
1987:O
,:O
for:O
example:O
,:O
an:O
Apple:product-other
IIGS:product-other
user:O
could:O
view:O
pictures:O
created:O
on:O
an:O
Atari:product-other
ST:product-other
or:O
Commodore:product-other
64:product-other
.:O