Assertion: amber | /r/HasProperty | rubbed with cloth
Facets:
Source sentences:
text: They noticed that when amber was rubbed with cloth, it attracted light objects such as hair.
text: According to the Swedish Museum of Amber, over 2500 years ago, the Greek philosopher Thales of Miletus discovered that when amber was rubbed against cloth, it produced sparks and attracted feathers, husks, and small wooden splinters.