With no explanation, label each line with "O", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
It
operated
domestic
passenger
service
for
Air
Canada
as
an
Air
Canada
Connector
air
carrier
via
a
code
sharing
agreement
.
It:O
operated:O
domestic:O
passenger:O
service:O
for:O
Air:organization-company
Canada:organization-company
as:O
an:O
Air:organization-company
Canada:organization-company
Connector:O
air:O
carrier:O
via:O
a:O
code:O
sharing:O
agreement:O
.:O