With no explanation, label each line with "other-disease", "O", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
In
1962
NAMRU-3
investigators
described
the
natural
infection
cycle
of
West
Nile
fever
,
which
involves
mosquitoes
and
birds
as
primary
vectors
and
hosts
.
In:O
1962:O
NAMRU-3:organization-other
investigators:O
described:O
the:O
natural:O
infection:O
cycle:O
of:O
West:other-disease
Nile:other-disease
fever:other-disease
,:O
which:O
involves:O
mosquitoes:O
and:O
birds:O
as:O
primary:O
vectors:O
and:O
hosts:O
.:O