Assertion: pm | /r/HasProperty | a unit of length
Facets:
value: in the metric system
type: LOCATION
Source sentences:
text: The picometre (international spelling as used by the International Bureau of Weights and Measures; SI symbol: pm) or picometer (American spelling) is a unit of length in the metric system, equal to 1×10−12 m, or one trillionth (1/1000000000000) of a metre, which is the SI base unit of length.