title: Schema.org: How to use isAccessoryOrSparePartFor in JSON-LD?
body: <p>I'm trying to declare products in JSON-LD for schema.org. I came across isAccessoryOrSparePartFor. So what do I put inside this tag? Schema.org says it should be a Product - but do I really have to put full product-declarations in it? Could I put URLs or EANs of the sparepart-products in it?</p>