{
    "source": {
        "type": "file",
        "location": "sample-manual.pdf",
        "filename": "sample-manual.pdf"
    },
    "metadata": {
        "Producer": "Prince 20160617 (www.princexml.com)",
        "Pages": 3
    },
    "references": {
        "url": [
            "Floppy_icon.svg",
            "http://www.aalto.fi",
            "http://en.wikipedia.org/wiki/USENET",
            "http://en.wikipedia.org/wiki/Jim_Ellis_(computing)",
            "http://en.wikipedia.org/wiki/Tom_Truscott",
            "Computer_keyboard_Danish_layout.svg",
            "http://www.pnr.iki.fi/cv.html",
            "http://en.wikipedia.org/wiki/Tim_Berners-Lee",
            "http://en.wikipedia.org/wiki/Brian_W._Kernighan",
            "www.princexml.com",
            "http://www.usenix.org",
            "http://en.wikipedia.org/wiki/X_Window_System",
            "http://en.wikipedia.org/wiki/Berkeley_UNIX",
            "http://en.wikipedia.org/w/index.php?title=The_Software_Tools_Project&action=edit&redlink=1"
        ]
    }
}