Assertion: stylus | /r/CapableOf | indent the foil
Facets:
value: into the cylinder's groove
type: TRANSITIVE-OBJECT
Source sentences:
text: While the cylinder was rotated and slowly progressed along its axis, the airborne sound vibrated a diaphragm connected to a stylus that indented the foil into the cylinder's groove, thereby recording the vibrations as "hill-and-dale" variations of the depth of the indentation.