EvidenceType: issuingPlace and validityPeriodConstraint seems to be for the type itself and not for the evidences conforming to the type

[jimjyang]

In the class EvidenceType, there is a property issuing place which "refers to the Location where an Evidence Type is issued", and a property validity period constraint which is the "Temporal condition on the validity period of the Evidence Type", i.e., the issuing place(s) and the validity period(s) for an instance of the type itself.

However, what is needed is to specify that the Evidences conforming to the EvidenceType should/must be issued at some given permissible issuing place(s) and be valid within some given permissible period(s)? Therefore, the properties should be something like cv:permissibleIssuingPlace and cv:permissibleValidityPeriod.