Assertion: metric system's use | /r/HasProperty | mandatory
Facets:
value: no longer
type: TEMPORAL
Source sentences:
text: The implementation of decimal time proved an immense task and under the article 22 of the law of 18 Germinal, Year III (7 April 1795), the use of decimal time was no longer mandatory.
text: The use of the metric system is mandatory for working in many key professions such as medicine, science, and engineering; therefore, metric must be included in the curricula.