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 ":".
Leighton
Contractors
and
joint
venture
partner
Abigroup
won
the
contract
to
upgrade
the
motorway
.
Leighton:organization-company
Contractors:organization-company
and:O
joint:O
venture:O
partner:O
Abigroup:organization-company
won:O
the:O
contract:O
to:O
upgrade:O
the:O
motorway:O
.:O