With no explanation, label each line with "O", "organization-government/governmentagency", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
World
Health
Organization
(
WHO
)
has
recommended
the
usage
of
``
Euphorbia
milii
''
in
aiding
snail
control
.
The:O
World:organization-government/governmentagency
Health:organization-government/governmentagency
Organization:organization-government/governmentagency
(:O
WHO:organization-government/governmentagency
):O
has:O
recommended:O
the:O
usage:O
of:O
``:O
Euphorbia:O
milii:O
'':O
in:O
aiding:O
snail:O
control:O
.:O