With no explanation, label each line with "product-game", "O", "product-software", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
It
was
released
for
Microsoft
Windows
,
Macintosh
,
and
,
through
an
arrangement
with
Loki
Games
,
Linux
.
It:O
was:O
released:O
for:O
Microsoft:product-software
Windows:product-software
,:O
Macintosh:product-software
,:O
and:O
,:O
through:O
an:O
arrangement:O
with:O
Loki:product-game
Games:product-game
,:O
Linux:product-software
.:O