With no explanation, label each line with "O", "person-artist/author", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Rest
has
worked
with
other
authors
assisting
them
with
their
titles
.
Rest:person-artist/author
has:O
worked:O
with:O
other:O
authors:O
assisting:O
them:O
with:O
their:O
titles:O
.:O