With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
He
also
refereed
in
some
dozen
other
magazines
and
books
.
He:O
also:O
refereed:O
in:O
some:O
dozen:O
other:O
magazines:O
and:O
books:O
.:O