<https://www.jasondoyleshop.com/jd-69-t-shirt-202021-edition-2-230-p.asp#product/231>
<http://schema.org/sku>
"231"^^<http://www.w3.org/2001/XMLSchema#integer>
<https://www.jasondoyleshop.com/jd-69-t-shirt-202021-edition-2-230-p.asp>