Groups

A group of individuals that may not have a biological relationship with each other. For example plantations, orphanages, military units, etc.

"groups": [
    "id": "GR001",
    "individuals": [
        { "id": "IN001" }
        { "id": "http://williamsfamily.example.com/tree/IN002" }
        {...}
    ],
    "desc": "Peers",
    "date": [...],
    "place": {...}
]