"sa-" meaning in Swazi

{
  "etymology_templates": [
    {
      "args": {
        "1": "ss",
        "2": "bnt-pro",
        "3": "*kíá-"
      },
      "expansion": "Proto-Bantu *kíá-",
      "name": "inh"
    }
  ],
  "etymology_text": "From Proto-Bantu *kíá-.",
  "head_templates": [
    {
      "args": {
        "1": "ss",
        "2": "prefix",
        "cat2": "possessive concords"
      },
      "expansion": "sa-",
      "name": "head"
    }
  ],
  "lang": "Swazi",
  "lang_code": "ss",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 15 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Swazi entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Swazi possessive concords",
          "parents": [
            "Possessive concords",
            "Concords",
            "Prefixes",
            "Morphemes",
            "Lemmas"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "of; class 7 possessive concord."
      ],
      "id": "en-sa--ss-prefix-JsTqwz6M",
      "links": [
        [
          "of",
          "of"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "sa-"
}

{
  "categories": [
    "Pages with 15 entries",
    "Pages with entries"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "ss",
        "2": "bnt-pro",
        "3": "*kíá-"
      },
      "expansion": "Proto-Bantu *kíá-",
      "name": "inh"
    }
  ],
  "etymology_text": "From Proto-Bantu *kíá-.",
  "head_templates": [
    {
      "args": {
        "1": "ss",
        "2": "prefix",
        "cat2": "possessive concords"
      },
      "expansion": "sa-",
      "name": "head"
    }
  ],
  "lang": "Swazi",
  "lang_code": "ss",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        "Pages with 15 entries",
        "Pages with entries",
        "Swazi entries with incorrect language header",
        "Swazi lemmas",
        "Swazi possessive concords",
        "Swazi prefixes",
        "Swazi terms derived from Proto-Bantu",
        "Swazi terms inherited from Proto-Bantu"
      ],
      "glosses": [
        "of; class 7 possessive concord."
      ],
      "links": [
        [
          "of",
          "of"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "sa-"
}