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 ":".
The
airport
is
operational
24
hours
per
day
,
handling
about
3.5
million
passengers
annually
,
and
is
part
of
the
national
airports
system
of
Canada
.
The:O
airport:O
is:O
operational:O
24:O
hours:O
per:O
day:O
,:O
handling:O
about:O
3.5:O
million:O
passengers:O
annually:O
,:O
and:O
is:O
part:O
of:O
the:O
national:O
airports:O
system:O
of:O
Canada:location-GPE
.:O