With no explanation, label each line with "O", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
After
completing
his
apprenticeship
,
he
became
a
chargehand
at
Stephenson
's
,
before
being
appointed
Locomotive
Superintendent
of
the
Great
North
of
England
Railway
in
February
1840
.
After:O
completing:O
his:O
apprenticeship:O
,:O
he:O
became:O
a:O
chargehand:O
at:O
Stephenson:organization-company
's:organization-company
,:O
before:O
being:O
appointed:O
Locomotive:O
Superintendent:O
of:O
the:O
Great:organization-company
North:organization-company
of:organization-company
England:organization-company
Railway:organization-company
in:O
February:O
1840:O
.:O