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 ":".
Ryberg
's
1949
article
gave
further
weight
to
that
conclusion
.
Ryberg:person-other
's:O
1949:O
article:O
gave:O
further:O
weight:O
to:O
that:O
conclusion:O
.:O