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 ":".
A
group
of
whites
brought
black
guests
to
the
restaurant
,
and
the
manager
had
them
all
arrested
.
A:O
group:O
of:O
whites:O
brought:O
black:O
guests:O
to:O
the:O
restaurant:O
,:O
and:O
the:O
manager:O
had:O
them:O
all:O
arrested:O
.:O