With no explanation, label each line with "O", "product-train", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
This
only
changed
after
the
new
Neubaulokomotive
DR
Class
99.77-79
was
put
into
service
in
1953
,
and
the
transport
volume
reached
the
1930s
levels
again
.
This:O
only:O
changed:O
after:O
the:O
new:O
Neubaulokomotive:product-train
DR:product-train
Class:product-train
99.77-79:product-train
was:O
put:O
into:O
service:O
in:O
1953:O
,:O
and:O
the:O
transport:O
volume:O
reached:O
the:O
1930s:O
levels:O
again:O
.:O