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 ":".
When
a
base
was
set
up
at
London
Gatwick
the
name
was
changed
to
AB
Airlines
as
its
network
covered
more
destinations
than
just
Shannon
.
When:O
a:O
base:O
was:O
set:O
up:O
at:O
London:building-airport
Gatwick:building-airport
the:O
name:O
was:O
changed:O
to:O
AB:organization-company
Airlines:organization-company
as:O
its:O
network:O
covered:O
more:O
destinations:O
than:O
just:O
Shannon:building-airport
.:O