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
locomotive
roundhouse
,
with
its
20m
turntable
,
is
over
100
years
old
and
can
accommodate
24
locomotives
.
The:O
locomotive:product-train
roundhouse:product-train
,:O
with:O
its:O
20m:O
turntable:O
,:O
is:O
over:O
100:O
years:O
old:O
and:O
can:O
accommodate:O
24:O
locomotives:O
.:O