With no explanation, label each line with "O", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
``
Voermans
elected
to
end
their
partnership
in
the
Spring
of
2005
after
ten
years
of
collaboration
''
.
``:O
Voermans:organization-company
elected:O
to:O
end:O
their:O
partnership:O
in:O
the:O
Spring:O
of:O
2005:O
after:O
ten:O
years:O
of:O
collaboration:O
'':O
.:O