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 ":".
(
The
drinking
age
had
been
18
for
many
years
before
the
first
raise
on
December
4
,
1982
,
to
19
.
)
(:O
The:O
drinking:O
age:O
had:O
been:O
18:O
for:O
many:O
years:O
before:O
the:O
first:O
raise:O
on:O
December:O
4:O
,:O
1982:O
,:O
to:O
19:O
.:O
):O