With no explanation, label each line with "product-airplane", "O", "building-airport", "person-soldier", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
On
the
Whitley
's
way
back
to
base
,
the
bomber
was
spotted
by
search
lights
,
and
``
Oberleutnant
''
Wolfgang
Thimmig
was
scrambled
from
Venlo
Airfield
to
intercept
the
bomber
.
On:O
the:O
Whitley:product-airplane
's:O
way:O
back:O
to:O
base:O
,:O
the:O
bomber:O
was:O
spotted:O
by:O
search:O
lights:O
,:O
and:O
``:O
Oberleutnant:O
'':O
Wolfgang:person-soldier
Thimmig:person-soldier
was:O
scrambled:O
from:O
Venlo:building-airport
Airfield:building-airport
to:O
intercept:O
the:O
bomber:O
.:O