With no explanation, label each line with "O", "organization-government/governmentagency", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
bridge
was
authorized
by
Congress
in
February
1925
,
and
was
completed
in
January
1932
.
The:O
bridge:O
was:O
authorized:O
by:O
Congress:organization-government/governmentagency
in:O
February:O
1925:O
,:O
and:O
was:O
completed:O
in:O
January:O
1932:O
.:O