With no explanation, label each line with "O", "location-bodiesofwater", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
In
1827
,
the
Hudson
's
Bay
Company
's
men
first
penetrated
the
valleys
of
the
Birkenhead
and
Lillooet
Rivers
.
In:O
1827:O
,:O
the:O
Hudson:organization-company
's:organization-company
Bay:organization-company
Company:organization-company
's:O
men:O
first:O
penetrated:O
the:O
valleys:O
of:O
the:O
Birkenhead:location-bodiesofwater
and:O
Lillooet:location-bodiesofwater
Rivers:location-bodiesofwater
.:O