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 ":".
These
books
with
DRM
require
authentication
from
Adobe
in
order
to
be
read
on
the
device
.
These:O
books:O
with:O
DRM:O
require:O
authentication:O
from:O
Adobe:product-software
in:O
order:O
to:O
be:O
read:O
on:O
the:O
device:O
.:O