With no explanation, label each line with "O", "building-airport", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-hospital" preceded by ":".
Piarco
International
Airport
is
also
the
primary
hub
and
operating
base
of
Caribbean
Airlines
and
was
also
the
primary
hub
and
operating
base
of
the
now
defunct
BWIA
West
Indies
Airways
and
Air
Caribbean
.
Piarco:building-airport
International:building-airport
Airport:building-airport
is:O
also:O
the:O
primary:O
hub:O
and:O
operating:O
base:O
of:O
Caribbean:organization-company
Airlines:organization-company
and:O
was:O
also:O
the:O
primary:O
hub:O
and:O
operating:O
base:O
of:O
the:O
now:O
defunct:O
BWIA:organization-company
West:organization-company
Indies:organization-company
Airways:organization-company
and:O
Air:organization-company
Caribbean:organization-company
.:O