"separar el gra de la palla" meaning in Catalan

{
  "categories": [
    {
      "kind": "other",
      "name": "Locutions verbales en catalan",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Catalan",
      "orig": "catalan",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Catalan",
  "lang_code": "ca",
  "pos": "verb",
  "pos_title": "Locution verbale",
  "senses": [
    {
      "glosses": [
        "Séparer le bon grain de l’ivraie."
      ],
      "id": "fr-separar_el_gra_de_la_palla-ca-verb-PF4m7yY6"
    }
  ],
  "word": "separar el gra de la palla"
}

{
  "categories": [
    "Locutions verbales en catalan",
    "catalan"
  ],
  "lang": "Catalan",
  "lang_code": "ca",
  "pos": "verb",
  "pos_title": "Locution verbale",
  "senses": [
    {
      "glosses": [
        "Séparer le bon grain de l’ivraie."
      ]
    }
  ],
  "word": "separar el gra de la palla"
}