MediaWiki API result

This is the HTML representation of the JSON format. HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format. To see the non-HTML representation of the JSON format, set format=json.
See the complete documentation, or the API help for more information.
{
    "entities": {
        "Q42": {
            "pageid": 46,
            "ns": 0,
            "title": "Q42",
            "lastrevid": 551,
            "modified": "2019-07-08T16:58:45Z",
            "type": "item",
            "id": "Q42",
            "labels": {
                "en": {
                    "language": "en",
                    "value": "Age 55"
                }
            },
            "descriptions": {
                "en": {
                    "language": "en",
                    "value": "age record for an old person 55 years old"
                }
            },
            "aliases": {},
            "claims": {
                "P1": [
                    {
                        "mainsnak": {
                            "snaktype": "value",
                            "property": "P1",
                            "hash": "3390ac1861452137f6845c28ab29f1d918ee8bf5",
                            "datavalue": {
                                "value": {
                                    "entity-type": "item",
                                    "numeric-id": 424,
                                    "id": "Q424"
                                },
                                "type": "wikibase-entityid"
                            },
                            "datatype": "wikibase-item"
                        },
                        "type": "statement",
                        "id": "Q42$0F4B7BF1-9083-4EEB-B10C-504FC219FD94",
                        "rank": "normal"
                    }
                ],
                "P3": [
                    {
                        "mainsnak": {
                            "snaktype": "value",
                            "property": "P3",
                            "hash": "abf6baeafc20593e340041ec03f39176b02218c6",
                            "datavalue": {
                                "value": {
                                    "amount": "+55",
                                    "unit": "1"
                                },
                                "type": "quantity"
                            },
                            "datatype": "quantity"
                        },
                        "type": "statement",
                        "id": "Q42$2550B8DE-1E16-408B-BBAF-7A62CE1F9386",
                        "rank": "normal"
                    }
                ],
                "P4": [
                    {
                        "mainsnak": {
                            "snaktype": "value",
                            "property": "P4",
                            "hash": "cd98e2087c0dd0cd4512fec3495e5dda3524fed4",
                            "datavalue": {
                                "value": {
                                    "entity-type": "item",
                                    "numeric-id": 429,
                                    "id": "Q429"
                                },
                                "type": "wikibase-entityid"
                            },
                            "datatype": "wikibase-item"
                        },
                        "type": "statement",
                        "id": "Q42$79B7B8BC-5264-4C11-92BF-BC3601078E21",
                        "rank": "normal"
                    }
                ]
            },
            "sitelinks": {}
        }
    },
    "success": 1
}