With no explanation, label each line with "O", "location-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
Roosevelt
National
Forest
began
on
May
22
,
1902
as
part
of
the
Medicine
Bow
Forest
Reserve
.
The:O
Roosevelt:location-other
National:location-other
Forest:location-other
began:O
on:O
May:O
22:O
,:O
1902:O
as:O
part:O
of:O
the:O
Medicine:location-other
Bow:location-other
Forest:location-other
Reserve:location-other
.:O