With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
The
changeover
from
6
to
12
V
happened
when
bigger
engines
with
higher
compression
ratios
required
more
electrical
power
to
start
.
The:O
changeover:O
from:O
6:O
to:O
12:O
V:O
happened:O
when:O
bigger:O
engines:O
with:O
higher:O
compression:O
ratios:O
required:O
more:O
electrical:O
power:O
to:O
start:O
.:O