With no explanation, label each line with "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
After
he
fell
ill
,
Royce
was
looked
after
by
a
nurse
,
Ethel
Aubin
.
After:O
he:O
fell:O
ill:O
,:O
Royce:person-other
was:O
looked:O
after:O
by:O
a:O
nurse:O
,:O
Ethel:person-other
Aubin:person-other
.:O