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 ":".
The
party
joined
the
Socialist
Electoral
League
(
SV
)
.
The:O
party:O
joined:O
the:O
Socialist:organization-politicalparty
Electoral:organization-politicalparty
League:organization-politicalparty
(:organization-politicalparty
SV:organization-politicalparty
):organization-politicalparty
.:O