List of citations doesn’t get recognized by SDTT - schema.org

Question

I am trying to structure a list of citations properly using JSON-LD and just cannot get Google’s SDTT to recognize the items.
I have simplified the data here. Can anyone tell me what it is that is not allowing the SDTT to see the item?
<script type="application/ld+json">
"#context": "http://schema.org/",
"#type": "ItemList" {
"#type": "citation" {
"#type" : "periodical" {
"name": "Log of Mystic Seaport (1948-2003; Vols. 1-54)"
},
"#type": "vehicle" {
"name": "Mary Celeste",
"category": "brig",
"date": "1905",
"nationality": "American",
"weight": "",
"id": ""
}
}
}
}
</script>

Answer 1

Errors
In JSON-LD, the curly braces always have to come in pairs:
You have four {, but five }.
Schema.org terms are case-sensitive:
There is no periodical, but Periodical.
There is no vehicle, but Vehicle.
JSON-LD’s #type can only be used for types, not for properties:
citation is not a type, but a property.
A #type statement can’t be followed by a {:
"#type": "ItemList" { (and the other occurrences) is invalid. It seems that you want to use a property here in addition.
For a Schema.org type, you should only use properties that are defined for it:
The Vehicle type doesn’t define the properties date, nationality, nor id (there is no such property in Schema.org).
ItemList entries
You need to use the itemListElement property for providing the list entries:
{
"#context": "http://schema.org/",
"#type": "ItemList",
"itemListElement": [
{
"#type": "CreativeWork"
},
{
"#type": "CreativeWork"
},
{
"#type": "CreativeWork"
}
]
}