c12db633_d_Data_______Google_Developers__Type
[Property] reviewRating [Description] The rating given in this review. A nested schema.org/Rating (or more specific subtype, most typically AggregateRating). [Type] 
Rating
T h i n g
T e x t
P e r s o n o r O r g a n i z a t i o n
D a t e
R a t i n g
N u m b e r
Enabling Rich Snippets for Reviews and Ratings   |   Structured Data   |   Google Developers