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 ":".
Two
actors
have
co-authored
comics
with
Christopher
Golden
.
Two:O
actors:O
have:O
co-authored:O
comics:O
with:O
Christopher:person-artist/author
Golden:person-artist/author
.:O