With no explanation, label each line with "location-GPE", "O", "event-other", "person-artist/author", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
In
addition
to
his
academic
publications
,
Gale
has
written
popular
books
on
the
Chernobyl
accident
and
US
nuclear
energy
policy
.
In:O
addition:O
to:O
his:O
academic:O
publications:O
,:O
Gale:person-artist/author
has:O
written:O
popular:O
books:O
on:O
the:O
Chernobyl:event-other
accident:event-other
and:O
US:location-GPE
nuclear:O
energy:O
policy:O
.:O