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 ":".
The
line
was
closed
to
passengers
by
British
Railways
in
1956
.
The:O
line:O
was:O
closed:O
to:O
passengers:O
by:O
British:organization-company
Railways:organization-company
in:O
1956:O
.:O