With no explanation, label each line with "O", "organization-politicalparty", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Tyler
is
a
member
of
the
Unity
Party
,
having
joined
in
2009
following
its
merger
with
his
Liberian
Action
Party
.
Tyler:person-politician
is:O
a:O
member:O
of:O
the:O
Unity:organization-politicalparty
Party:organization-politicalparty
,:O
having:O
joined:O
in:O
2009:O
following:O
its:O
merger:O
with:O
his:O
Liberian:organization-politicalparty
Action:organization-politicalparty
Party:organization-politicalparty
.:O