With no explanation, label each line with "product-game", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
It
was
set
for
release
in
November
15
,
1991
but
due
to
re-configuring
the
engine
that
was
used
in
Commander
Keen
in
Goodbye
,
Galaxy
,
it
took
two
years
to
develop
.
It:O
was:O
set:O
for:O
release:O
in:O
November:O
15:O
,:O
1991:O
but:O
due:O
to:O
re-configuring:O
the:O
engine:O
that:O
was:O
used:O
in:O
Commander:product-game
Keen:product-game
in:product-game
Goodbye:product-game
,:product-game
Galaxy:product-game
,:O
it:O
took:O
two:O
years:O
to:O
develop:O
.:O