With no explanation, label each line with "O", "location-bodiesofwater", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
A
post
office
has
been
in
operation
in
Rice
Lake
since
1872
.
A:O
post:O
office:O
has:O
been:O
in:O
operation:O
in:O
Rice:location-bodiesofwater
Lake:location-bodiesofwater
since:O
1872:O
.:O