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 ":".
She
worked
for
this
theatre
until
1940
.
She:O
worked:O
for:O
this:O
theatre:O
until:O
1940:O
.:O