With no explanation, label each line with "O", "organization-politicalparty", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
While
a
number
of
local
parties
announced
their
intention
to
contest
the
elections
,
Residents
Rally
quickly
emerged
as
one
of
the
leading
contenders
.
While:O
a:O
number:O
of:O
local:O
parties:O
announced:O
their:O
intention:O
to:O
contest:O
the:O
elections:O
,:O
Residents:organization-politicalparty
Rally:organization-politicalparty
quickly:O
emerged:O
as:O
one:O
of:O
the:O
leading:O
contenders:O
.:O