With no explanation, label each line with "O", "person-scholar", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Many
books
on
animal
welfare
science
have
been
written
,
for
example
those
by
Professor
Marian
Stamp
Dawkins
,
Professor
David
Fraser
,
Michael
Appleby
,
Barry
Hughes
and
Joy
Mench
,
John
Webster
,
and
David
Mellor
et
al
.
Many:O
books:O
on:O
animal:O
welfare:O
science:O
have:O
been:O
written:O
,:O
for:O
example:O
those:O
by:O
Professor:O
Marian:person-scholar
Stamp:person-scholar
Dawkins:person-scholar
,:O
Professor:person-scholar
David:person-scholar
Fraser:person-scholar
,:O
Michael:person-scholar
Appleby:person-scholar
,:O
Barry:person-scholar
Hughes:person-scholar
and:O
Joy:person-scholar
Mench:person-scholar
,:O
John:person-scholar
Webster:person-scholar
,:O
and:O
David:person-scholar
Mellor:person-scholar
et:O
al:O
.:O