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
getting
into
financial
difficulties
over
the
Kariba
Dam
North
Cavern
project
,
the
company
was
acquired
by
Tarmac
and
integrated
into
Tarmac
Construction
in
1973
.
After:O
getting:O
into:O
financial:O
difficulties:O
over:O
the:O
Kariba:O
Dam:O
North:O
Cavern:O
project:O
,:O
the:O
company:O
was:O
acquired:O
by:O
Tarmac:organization-company
and:O
integrated:O
into:O
Tarmac:organization-company
Construction:organization-company
in:O
1973:O
.:O