With no explanation, label each line with "O", "event-sportsevent", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
This
storyline
came
to
an
end
before
``
Superstars
of
Wrestling
``
.
This:O
storyline:O
came:O
to:O
an:O
end:O
before:O
``:O
Superstars:event-sportsevent
of:event-sportsevent
Wrestling:event-sportsevent
``:O
.:O