"a proposito di" meaning in Italian

{
  "head_templates": [
    {
      "args": {
        "1": "it",
        "2": "preposition"
      },
      "expansion": "a proposito di",
      "name": "head"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "prep",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Italian prepositions",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "Now, regarding this Guido Cavalcanti, it should be noted that there had been, at the beginning of the last century, another Guido Cavalcanti, a man equally illustrious during his time for both birth and literacy",
          "ref": "1348, Matteo Villani, Nuova Cronica, vol. 6, published 1825, page 163",
          "text": "A proposito poi di questo Guido Cavalcanti sia lecito qui d’osservare esserci stato in principio del secolo passato un altro Guido Cavalcanti, uomo egualmente illustre al suo tempo per nascita e per letteratura",
          "type": "quotation"
        }
      ],
      "glosses": [
        "about, regarding, with regard to, of"
      ],
      "id": "en-a_proposito_di-it-prep-n7DO~aAt",
      "links": [
        [
          "about",
          "about"
        ],
        [
          "regarding",
          "regarding"
        ],
        [
          "regard",
          "regard"
        ],
        [
          "of",
          "of"
        ]
      ]
    }
  ],
  "word": "a proposito di"
}

{
  "head_templates": [
    {
      "args": {
        "1": "it",
        "2": "preposition"
      },
      "expansion": "a proposito di",
      "name": "head"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "prep",
  "senses": [
    {
      "categories": [
        "Italian lemmas",
        "Italian multiword terms",
        "Italian prepositions",
        "Italian terms with quotations"
      ],
      "examples": [
        {
          "english": "Now, regarding this Guido Cavalcanti, it should be noted that there had been, at the beginning of the last century, another Guido Cavalcanti, a man equally illustrious during his time for both birth and literacy",
          "ref": "1348, Matteo Villani, Nuova Cronica, vol. 6, published 1825, page 163",
          "text": "A proposito poi di questo Guido Cavalcanti sia lecito qui d’osservare esserci stato in principio del secolo passato un altro Guido Cavalcanti, uomo egualmente illustre al suo tempo per nascita e per letteratura",
          "type": "quotation"
        }
      ],
      "glosses": [
        "about, regarding, with regard to, of"
      ],
      "links": [
        [
          "about",
          "about"
        ],
        [
          "regarding",
          "regarding"
        ],
        [
          "regard",
          "regard"
        ],
        [
          "of",
          "of"
        ]
      ]
    }
  ],
  "word": "a proposito di"
}