Question: A unit of time or time unit is any particular time interval, used as a standard way of measuring or expressing duration, the exact modern definition, is from the National Institute of Standards and Technology (NIST), a measurement standards laboratory, and a non-regulatory agency of which organization?
{'answer': 'United States Department of Commerce', 'supporting_facts': [['Unit of time', 2], ['National Institute of Standards and Technology', 0]]}