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 ":".
When
first
created
in
1868
,
the
Canadian
dollar
was
partially
backed
by
gold
.
When:O
first:O
created:O
in:O
1868:O
,:O
the:O
Canadian:location-GPE
dollar:O
was:O
partially:O
backed:O
by:O
gold:O
.:O