With no explanation, label each line with "location-GPE", "person-soldier", "O", "event-attack/battle/war/militaryconflict", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
Doraine
and
Ellis
entertained
Allied
troops
on
bills
with
such
performers
as
Morey
Amsterdam
and
Martha
Raye
before
being
forced
to
return
stateside
following
minor
injuries
received
in
London
during
the
Blitz
.
Doraine:person-soldier
and:O
Ellis:person-soldier
entertained:O
Allied:O
troops:O
on:O
bills:O
with:O
such:O
performers:O
as:O
Morey:person-soldier
Amsterdam:person-soldier
and:O
Martha:person-soldier
Raye:person-soldier
before:O
being:O
forced:O
to:O
return:O
stateside:O
following:O
minor:O
injuries:O
received:O
in:O
London:location-GPE
during:O
the:O
Blitz:event-attack/battle/war/militaryconflict
.:O