Official rating of a piece of content—for example,'MPAA PG-13'.

The rating given in this review. Note that reviews can themselves be rated. The `reviewRating` applies to rating given by the review. The [aggregateRating](http://schema.org/aggregateRating) property applies to the review itself, as a creative work.

An official rating for a lodging business or food establishment, e.g. from national associations or standards bodies. Use the author property to indicate the rating organization, e.g. as an Organization with name such as (e.g. HOTREC, DEHOGA, WHR, or Hotelstars).