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 ":".
Berryman
later
credited
Van
Doren
with
sparking
his
interest
in
writing
poetry
seriously
.
Berryman:person-artist/author
later:O
credited:O
Van:person-artist/author
Doren:person-artist/author
with:O
sparking:O
his:O
interest:O
in:O
writing:O
poetry:O
seriously:O
.:O