With no explanation, label each line with "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
Tana
Forum
is
annually
held
between
heads
of
state
in
Africa
,
and
focuses
on
the
economy
,
security
and
other
key
continental
sectors
.
The:O
Tana:O
Forum:O
is:O
annually:O
held:O
between:O
heads:O
of:O
state:O
in:O
Africa:location-GPE
,:O
and:O
focuses:O
on:O
the:O
economy:O
,:O
security:O
and:O
other:O
key:O
continental:O
sectors:O
.:O