From the activities above we found that sound is produced by vibrating matter.
(we; found; that sound is produced by vibrating matter; L:From the activities above) Context(we found,List([26, 34))):(that sound; is produced; by vibrating matter)
we found,List([26, 34))
we that sound
found is produced
that sound is produced by vibrating matter L:From the activities above
by vibrating matter