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 ":".
From
28
June
2007
,
a
second
long-haul
route
to
Vancouver
,
British
Columbia
was
started
.
From:O
28:O
June:O
2007:O
,:O
a:O
second:O
long-haul:O
route:O
to:O
Vancouver:location-GPE
,:O
British:location-GPE
Columbia:location-GPE
was:O
started:O
.:O