"If this tiny disc can vibrate a bone," he thought, "then an iron disc might vibrate an iron rod, or at least, an iron wire."
(this tiny disc; can vibrate; a bone) (he; thought; then an iron disc might vibrate an iron rod, or at least, an iron wire) Context(he thought,List([40, 50))):(an iron disc; might vibrate; an iron rod; T:then)
he thought,List([40, 50))
this tiny disc he an iron disc
can vibrate thought might vibrate
a bone
then an iron disc might vibrate an iron rod, or at least, an iron wire
an iron rod T:then