With no explanation, label each line with "O", "product-software", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Windows
then
attempts
to
open
the
registry
file
SYSTEM.DAT
.
Windows:product-software
then:O
attempts:O
to:O
open:O
the:O
registry:O
file:O
SYSTEM.DAT:product-software
.:O