{"version":"1.0","type":"link","provider_name":"Hardcover","provider_url":"https://hardcover.app","cache_age":86400,"title":"Lean logic","url":"https://hardcover.app/books/lean-logic","author_name":"David Fleming","author_url":"https://hardcover.app/authors/david-fleming","thumbnail_url":"https://assets.hardcover.app/edition/544121/9322978-L.jpg","thumbnail_width":255,"thumbnail_height":314}