Assertion: lens | /r/HasProperty | rubbed with clean fingertip
Facets:
value: on each side
type: LOCATION
value: for about 20 seconds
type: TEMPORAL
Source sentences:
text: A few drops of cleaner are applied to the lens while it rests in the palm of the hand; the lens is rubbed for about 20 seconds with a clean fingertip (depending on the product) on each side.