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 ":".
The
delivery
of
the
ICE
1
powercars
(
now
called
Class
401
)
,
based
on
those
of
the
ICE-V
started
in
1987
.
The:O
delivery:O
of:O
the:O
ICE:product-train
1:product-train
powercars:O
(:O
now:O
called:O
Class:product-train
401:product-train
):O
,:O
based:O
on:O
those:O
of:O
the:O
ICE-V:product-train
started:O
in:O
1987:O
.:O