With no explanation, label each line with "location-GPE", "O", "product-ship", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Upon
completion
of
the
tour
,
``
Comet
``
returned
to
Danzig
,
where
she
was
decommissioned
on
12
October
.
Upon:O
completion:O
of:O
the:O
tour:O
,:O
``:O
Comet:product-ship
``:O
returned:O
to:O
Danzig:location-GPE
,:O
where:O
she:O
was:O
decommissioned:O
on:O
12:O
October:O
.:O