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 ":".
Cylinders
are
either
oscillating
(
single-acting
or
double-acting
)
or
fixed
cylinder
using
slide-valves
,
piston
valves
or
poppet
valves
(
normally
double-acting
)
.
Cylinders:O
are:O
either:O
oscillating:O
(:O
single-acting:O
or:O
double-acting:O
):O
or:O
fixed:O
cylinder:O
using:O
slide-valves:O
,:O
piston:O
valves:O
or:O
poppet:O
valves:O
(:O
normally:O
double-acting:O
):O
.:O