What I need

result.json

{
    "occurrences" : [
        {
            "label" : "one",
            "thing" : "url_string",
            "occurrence": 100
        },{
            "label" : "linkedWithOne",
            "thing" : "url_string",
            "occurrence" : 90
        },{
            "label" : "alsoLinkedWithOne",
            "thing" : "url_string",
            "occurrence" : 80
        },{
            "label" : "two",
            "thing" : "url_string",
            "occurrence" : 200
        },{
            "label" : "linkedWithTwo",
            "thing" : "url_string",
            "occurrence" : 60
        },{
            "label" : "alsoLinkedWithTwo",
            "thing" : "url_string",
            "occurrence" : 200
        },{
            "label" : "identicalAsLinkedWithOne",
            "thing" : "url_string",
            "occurrence" : 30
        }
    ],
    "links" : [
        { "source" : 0, "target" : 1, "weight" : 90},
        { "source" : 0, "target" : 2, "weight" : 80},
        { "source" : 3, "target" : 4, "weight" : 60},
        { "source" : 3, "target" : 5, "weight" : 200},
        { "source" : 3, "target" : 1, "weight" : 30},
    ]
}