"les siens" meaning in French

{
  "head_templates": [
    {
      "args": {
        "1": "fr",
        "2": "pronoun form",
        "cat2": "possessive pronouns",
        "g": "m-p"
      },
      "expansion": "les siens m pl",
      "name": "head"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "pron",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "French possessive pronouns",
          "parents": [
            "Possessive pronouns",
            "Pronouns",
            "Lemmas"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "I'd forgotten my homework, so Paul showed me his.",
          "text": "J’avais oublié mes devoirs, alors Paul m’a montré les siens.",
          "type": "example"
        },
        {
          "english": "I'd forgotten my homework, so Marie showed me hers.",
          "text": "J’avais oublié mes devoirs, alors Marie m’a montré les siens.",
          "type": "example"
        }
      ],
      "form_of": [
        {
          "word": "le sien"
        }
      ],
      "glosses": [
        "masculine plural of le sien"
      ],
      "id": "en-les_siens-fr-pron-iG-JNi-c",
      "links": [
        [
          "le sien",
          "le sien#French"
        ]
      ],
      "tags": [
        "form-of",
        "masculine",
        "plural"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/le sjɛ̃/"
    }
  ],
  "word": "les siens"
}

{
  "head_templates": [
    {
      "args": {
        "1": "fr",
        "2": "pronoun form",
        "cat2": "possessive pronouns",
        "g": "m-p"
      },
      "expansion": "les siens m pl",
      "name": "head"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "pron",
  "senses": [
    {
      "categories": [
        "French entries with incorrect language header",
        "French non-lemma forms",
        "French possessive pronouns",
        "French pronoun forms",
        "French terms with IPA pronunciation",
        "French terms with usage examples"
      ],
      "examples": [
        {
          "english": "I'd forgotten my homework, so Paul showed me his.",
          "text": "J’avais oublié mes devoirs, alors Paul m’a montré les siens.",
          "type": "example"
        },
        {
          "english": "I'd forgotten my homework, so Marie showed me hers.",
          "text": "J’avais oublié mes devoirs, alors Marie m’a montré les siens.",
          "type": "example"
        }
      ],
      "form_of": [
        {
          "word": "le sien"
        }
      ],
      "glosses": [
        "masculine plural of le sien"
      ],
      "links": [
        [
          "le sien",
          "le sien#French"
        ]
      ],
      "tags": [
        "form-of",
        "masculine",
        "plural"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/le sjɛ̃/"
    }
  ],
  "word": "les siens"
}