Property:Held in language

{
    "type": "PROPERTY_CONSTRAINT_SCHEMA",
    "constraints": {
        "type_constraint": "_txt",
        "allowed_values": [
            "ab - Abkhazian",
            "af - Afrikaans",
            "an - Aragonese",
            "ar - Arabic",
            "as - Assamese",
            "az - Azerbaijani",
            "be - Belarusian",
            "bg - Bulgarian",
            "bn - Bengali",
            "bo - Tibetan",
            "br - Breton",
            "bs - Bosnian",
            "ca - Catalan / Valencian",
            "ce - Chechen",
            "co - Corsican",
            "cs - Czech",
            "cu - Church Slavic",
            "cy - Welsh",
            "da - Danish",
            "de - German",
            "el - Greek",
            "en - English",
            "eo - Esperanto",
            "es - Spanish / Castilian",
            "et - Estonian",
            "eu - Basque",
            "fa - Persian",
            "fi - Finnish",
            "fj - Fijian",
            "fo - Faroese",
            "fr - French",
            "fy - Western Frisian",
            "ga - Irish",
            "gd - Gaelic / Scottish Gaelic",
            "gl - Galician",
            "gv - Manx",
            "he - Hebrew",
            "hi - Hindi",
            "hr - Croatian",
            "ht - Haitian; Haitian Creole",
            "hu - Hungarian",
            "hy - Armenian",
            "id - Indonesian",
            "is - Icelandic",
            "it - Italian",
            "ja - Japanese",
            "jv - Javanese",
            "ka - Georgian",
            "kg - Kongo",
            "ko - Korean",
            "ku - Kurdish",
            "kw - Cornish",
            "ky - Kirghiz",
            "la - Latin",
            "lb - Luxembourgish; Letzeburgesch",
            "li - Limburgan; Limburger; Limburgish",
            "ln - Lingala",
            "lt - Lithuanian",
            "lv - Latvian",
            "mg - Malagasy",
            "mk - Macedonian",
            "mn - Mongolian",
            "mo - Moldavian",
            "ms - Malay",
            "mt - Maltese",
            "my - Burmese",
            "nb - Norwegian (Bokmål)",
            "ne - Nepali",
            "nl - Dutch",
            "nn - Norwegian (Nynorsk)",
            "no - Norwegian",
            "oc - Occitan (post 1500); Provençal",
            "pl - Polish",
            "pt - Portuguese",
            "rm - Raeto-Romance",
            "ro - Romanian",
            "ru - Russian",
            "sc - Sardinian",
            "se - Northern Sami",
            "sk - Slovak",
            "sl - Slovenian",
            "so - Somali",
            "sq - Albanian",
            "sr - Serbian",
            "sv - Swedish",
            "sw - Swahili",
            "tk - Turkmen",
            "tr - Turkish",
            "ty - Tahitian",
            "uk - Ukrainian",
            "ur - Urdu",
            "uz - Uzbek",
            "vi - Vietnamese",
            "vo - Volapük",
            "yi - Yiddish",
            "zh - Chinese"
        ]
    }
}