Assertion: mercury | /r/HasProperty | known to ancient chinese
Facets:
value: before 2000 bc
type: TEMPORAL
Source sentences:
text: Mercury was known to ancient Chinese and Hindus before 2000 BC and was found in tubes in Egyptian tombs dated from 1500 BC
text: Mercury was known to the ancient Chinese and Hindus and has been found in 3500 year old Egyptian tombs.
text: Mercury was known to the ancient Chinese, Egyptians and Hindus and has been found in Egyptian tombs dating back to about 1500 B.C. (1), (2), (3)