qualifier free text free text
review date
When one review was published. A qualifier of the review property, bound to one review statement. Held as a literal (an ISO date string); the rich typed-date is a deferred literal-typing concern (DEFERRED D5), not v1 grammar.
Review date is free text, written for one product alone and never shared as a category.
It is a qualifier of review — it has meaning only inside a review statement, one per statement, never on its own. It belongs with review to social proof — what buyers and critics say about it.
It is answered inside every review statement, not as a standalone question on a kind.
Answered inside every review statement — not a standalone slot on any kind.