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 ":".
Mesterházy
was
elected
leader
of
the
Socialist
Party
in
July
2010
.
Mesterházy:person-politician
was:O
elected:O
leader:O
of:O
the:O
Socialist:organization-politicalparty
Party:organization-politicalparty
in:O
July:O
2010:O
.:O