Utilizando query expression
var result = from booksAfter2005 in books
join booksPublishedAfter2005 in books
on booksAfter2005.Title equals booksPublishedAfter2005.Title
where booksAfter2005.PageCount >= 500 && booksPublishedAfter2005.PublishedDate.Year > 2005
select booksAfter2005;
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