With no explanation, label each line with "O", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
It
is
on
the
World
Health
Organization
's
List
of
Essential
Medicines
.
It:O
is:O
on:O
the:O
World:organization-other
Health:organization-other
Organization:organization-other
's:O
List:O
of:O
Essential:O
Medicines:O
.:O