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 ":".
Four
sitting
MPs
left
to
join
the
party
:
Gilbert
Darrell
,
Austin
Thomas
,
Lionel
Simmons
and
Walter
Brangman
,
although
Simmons
later
returned
to
the
PLP
.
Four:O
sitting:O
MPs:O
left:O
to:O
join:O
the:O
party:O
::O
Gilbert:person-politician
Darrell:person-politician
,:O
Austin:person-politician
Thomas:person-politician
,:O
Lionel:person-politician
Simmons:person-politician
and:O
Walter:person-politician
Brangman:person-politician
,:O
although:O
Simmons:person-politician
later:O
returned:O
to:O
the:O
PLP:organization-politicalparty
.:O