With no explanation, label each line with "product-other", "O", "product-ship", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
player
's
objective
is
to
clear
the
Shield
's
99
sectors
of
alien
craft
while
piloting
the
Beamrider
ship
.
The:O
player:O
's:O
objective:O
is:O
to:O
clear:O
the:O
Shield:product-other
's:O
99:O
sectors:O
of:O
alien:O
craft:O
while:O
piloting:O
the:O
Beamrider:product-ship
ship:O
.:O