With no explanation, label each line with "O", "organization-company", "product-train", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
``
Rhenus
Veniro
``
was
contracted
to
operate
three
Stadler
Regio-Shuttle
RS1
diesel
multiple
units
that
were
modified
for
the
steep
grades
of
this
route
.
``:O
Rhenus:organization-company
Veniro:organization-company
``:O
was:O
contracted:O
to:O
operate:O
three:O
Stadler:product-train
Regio-Shuttle:product-train
RS1:product-train
diesel:O
multiple:O
units:O
that:O
were:O
modified:O
for:O
the:O
steep:O
grades:O
of:O
this:O
route:O
.:O