Use image gallery and main text in Product - schema.org

Question

This is an example of JSON-LD for a Schema.org Product:
<script type="application/ld+json">
{
"#context": "http://schema.org/",
"#type": "Product",
"name": "Executive Anvil",
"image": "http://www.example.com/anvil_executive.jpg",
"brand": {
"#type": "Thing",
"name": "ACME"
},
"aggregateRating": {
"#type": "AggregateRating",
"ratingValue": "4.4",
"ratingCount": "89"
},
"offers": {
"#type": "AggregateOffer",
"lowPrice": "119.99",
"highPrice": "199.99",
"priceCurrency": "USD"
}
}
</script>
But I have a lot of more properties for my product.
For example a related gallery, related videos, a long main text.
There are not these properties in Product.
Do I have to leave them? Or is there a way to use them?

Answer 1

For content about the product (like a video, a gallery, an article, etc.) you could use the Product item as value of the about property:
{
"#context": "http://schema.org/",
"#type": "VideoObject",
"name": "Video about your product",
"about": {
"#type": "Product",
"name": "Your product"
}
}
With JSON-LD’s #reverse, you can specify these within the Product item, if you prefer it:
{
"#context": "http://schema.org/",
"#type": "Product",
"name": "Your product",
"#reverse": {
"about": {
"#type": "VideoObject",
"name": "Video about your product"
}
}
}