With no explanation, label each line with "location-GPE", "O", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
He
began
as
a
toolmaker
at
the
Ernemann
factory
in
Dresden
,
a
renowned
manufacturer
of
photography
equipment
.
He:O
began:O
as:O
a:O
toolmaker:O
at:O
the:O
Ernemann:organization-company
factory:O
in:O
Dresden:location-GPE
,:O
a:O
renowned:O
manufacturer:O
of:O
photography:O
equipment:O
.:O