Assertion: basic unit | /r/HasProperty | the second
Facets:
Source sentences:
text: The basic unit of time is the second.
text: The basic unit of time is the second.
text: There are seven basic units in the SI system: the meter (m), the kilogram (kg), the second (s), the kelvin (K), the ampere (A), the mole (mol), and the candela (cd).