With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
(
in
reference
to
his
friendships
with
both
candidates
and
that
he
could
not
make
up
his
mind
)
.
(:O
in:O
reference:O
to:O
his:O
friendships:O
with:O
both:O
candidates:O
and:O
that:O
he:O
could:O
not:O
make:O
up:O
his:O
mind:O
):O
.:O