Task: Property Constraint Reasoning (ontology: Legal/LKIF_Core_Ontology)

The property 'initial date' applies to instances of 'Interval', and 'Efficacy Interval' is a subclass of 'Interval'. Which class can appear as the value of 'initial date' for instances of 'Efficacy Interval'?

A. Semantic Annotation
B. Modification
C. Moment
D. Publication Date

Answer: Moment