With no explanation, label each line with "organization-other", "O", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Obama
's
campaign
was
also
supported
by
Priorities
USA
Action
,
an
independent
expenditure
PAC
founded
by
several
former
Obama
campaign
officials
,
but
legally
prohibited
from
coordinating
with
the
candidate
or
his
campaign
.
Obama:person-politician
's:O
campaign:O
was:O
also:O
supported:O
by:O
Priorities:organization-other
USA:organization-other
Action:organization-other
,:O
an:O
independent:O
expenditure:O
PAC:organization-other
founded:O
by:O
several:O
former:O
Obama:person-politician
campaign:O
officials:O
,:O
but:O
legally:O
prohibited:O
from:O
coordinating:O
with:O
the:O
candidate:O
or:O
his:O
campaign:O
.:O