With no explanation, label each line with "organization-showorganization", "O", "organization-other", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
Whilst
in
S
Club
7
Stevens
fronted
the
World
Wide
Fund
for
Nature
.
Whilst:O
in:O
S:organization-showorganization
Club:organization-showorganization
7:organization-showorganization
Stevens:person-other
fronted:O
the:O
World:organization-other
Wide:organization-other
Fund:organization-other
for:organization-other
Nature:organization-other
.:O