With no explanation, label each line with "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
It
had
been
admitted
to
the
United
States
as
a
slave
state
in
1845
.
It:O
had:O
been:O
admitted:O
to:O
the:O
United:location-GPE
States:location-GPE
as:O
a:O
slave:O
state:O
in:O
1845:O
.:O