With no explanation, label each line with "O", "organization-company", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Because
Peggy
had
worked
for
several
years
as
a
software
designer
and
engineer
for
defense
contractors
like
McDonnell
Douglas
,
Panda
Express
computerized
its
operations
early
on
.
Because:O
Peggy:person-other
had:O
worked:O
for:O
several:O
years:O
as:O
a:O
software:O
designer:O
and:O
engineer:O
for:O
defense:O
contractors:O
like:O
McDonnell:person-other
Douglas:person-other
,:O
Panda:organization-company
Express:organization-company
computerized:O
its:O
operations:O
early:O
on:O
.:O