With no explanation, label each line with "location-GPE", "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Foremost
in
his
mind
was
the
``
liberation
''
of
his
former
family
estate
at
Gross-Klonia
;
Guderian
ordered
the
advance
on
Gross-Klonia
at
night
and
through
fog
,
leading
to
what
he
subsequently
admitted
were
``
serious
casualties
''
.
Foremost:O
in:O
his:O
mind:O
was:O
the:O
``:O
liberation:O
'':O
of:O
his:O
former:O
family:O
estate:O
at:O
Gross-Klonia:location-GPE
;:O
Guderian:person-other
ordered:O
the:O
advance:O
on:O
Gross-Klonia:location-GPE
at:O
night:O
and:O
through:O
fog:O
,:O
leading:O
to:O
what:O
he:O
subsequently:O
admitted:O
were:O
``:O
serious:O
casualties:O
'':O
.:O