With no explanation, label each line with "location-GPE", "O", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
Canadian
Venture
Exchange
is
today
known
as
the
TSX
Venture
Exchange
and
is
based
in
Calgary
,
although
still
has
offices
in
Montreal
.
The:O
Canadian:organization-company
Venture:organization-company
Exchange:organization-company
is:O
today:O
known:O
as:O
the:O
TSX:organization-company
Venture:organization-company
Exchange:organization-company
and:O
is:O
based:O
in:O
Calgary:location-GPE
,:O
although:O
still:O
has:O
offices:O
in:O
Montreal:location-GPE
.:O