LTW3/data/item/loot_tables/comment/writable_book.json

{
	"type":"minecraft:generic",
	"pools":[
		{
		"rolls":1,
		"entries":[
				{	
					"type":"item",
					"name":"minecraft:writable_book",
					"functions":[
                        {
						    "function":"set_name",
						    "name":{
                                "selector": "@s"
                            },
                            "entity": "this"
                        },
                        {
                            "function": "minecraft:set_lore",
                            "lore":[
                                {
                                    "text":"233"
                                }
                            ]
                        }
                    ]
				}
			]
		}
	]
}