With no explanation, label each line with "O", "event-protest", "location-GPE", "organization-government/governmentagency", "person-soldier", "art-broadcastprogram", "art-film", "art-music", "art-other" or "art-painting" preceded by ":".
Hitler
was
unmoved
,
and
so
Jeschonnek
approached
the
OKW
warning
that
the
British
may
use
Dutch
airfields
to
attack
the
Ruhr
.
Hitler:O
was:O
unmoved:O
,:O
and:O
so:O
Jeschonnek:person-soldier
approached:O
the:O
OKW:event-protest
warning:O
that:O
the:O
British:organization-government/governmentagency
may:O
use:O
Dutch:organization-government/governmentagency
airfields:O
to:O
attack:O
the:O
Ruhr:location-GPE
.:O