CREATE TABLE actors (
	id INTEGER NOT NULL, 
	first_name VARCHAR, 
	last_name VARCHAR, 
	birth_year INTEGER, 
	birth_location VARCHAR, 
	description VARCHAR, 
	image_url VARCHAR, 
	movies VARCHAR, 
	PRIMARY KEY (id)
)

in the actors table, birth_year column is an integer for the year, like 1991. movies column is a comma separated string of movie titles

CREATE TABLE books (
	id INTEGER NOT NULL, 
	isbn VARCHAR, 
	title VARCHAR, 
	author VARCHAR, 
	published INTEGER, 
	average_rating FLOAT, 
	ratings_count INTEGER, 
	work_text_review_count INTEGER, 
	image_url VARCHAR, 
	subject_times VARCHAR, 
	subject_places VARCHAR, 
	subjects VARCHAR, 
	number_of_pages INTEGER, 
	PRIMARY KEY (id)
)


CREATE TABLE characters (
	id INTEGER NOT NULL, 
	name VARCHAR, 
	description VARCHAR, 
	book_id INTEGER, 
	PRIMARY KEY (id), 
	FOREIGN KEY(book_id) REFERENCES books (id)
)

Using the above Database Schema, Write a SQL statement for the following: Who is the author with the highest average rating for their books? Please use JSON format in your answer.
user