With no explanation, label each line with "O", "location-other", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
It
was
renamed
the
Colorado
National
Forest
in
1910
,
and
was
renamed
to
honor
President
Theodore
Roosevelt
in
1932
.
It:O
was:O
renamed:O
the:O
Colorado:location-other
National:location-other
Forest:location-other
in:O
1910:O
,:O
and:O
was:O
renamed:O
to:O
honor:O
President:O
Theodore:person-politician
Roosevelt:person-politician
in:O
1932:O
.:O