With no explanation, label each line with "O", "organization-company", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Facebook
was
also
criticized
for
allowing
the
2012
Barack
Obama
presidential
campaign
to
analyze
and
target
select
users
by
providing
the
campaign
with
friendship
connections
of
users
who
signed
up
for
an
application
.
Facebook:organization-company
was:O
also:O
criticized:O
for:O
allowing:O
the:O
2012:O
Barack:person-politician
Obama:person-politician
presidential:O
campaign:O
to:O
analyze:O
and:O
target:O
select:O
users:O
by:O
providing:O
the:O
campaign:O
with:O
friendship:O
connections:O
of:O
users:O
who:O
signed:O
up:O
for:O
an:O
application:O
.:O