With no explanation, label each line with "O", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
These
services
were
terminated
following
the
closure
of
Air
Ceylon
in
1978
.
These:O
services:O
were:O
terminated:O
following:O
the:O
closure:O
of:O
Air:organization-company
Ceylon:organization-company
in:O
1978:O
.:O