With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
Those
traffic
wardens
that
did
not
wish
to
pursue
this
role
either
retired
or
took
employment
elsewhere
.
Those:O
traffic:O
wardens:O
that:O
did:O
not:O
wish:O
to:O
pursue:O
this:O
role:O
either:O
retired:O
or:O
took:O
employment:O
elsewhere:O
.:O