Mi lehet a hiba? Non-invocable member 'Select' cannot be used like a method.

{

var elements = xDoc.Element("rss").Element("channel").Elements("item");

var elementsWithKeywords = elements.Where(

el => keywords.All(

k => el.Element("title").Value.Contains(k) ||

el.Element("description").Value.Contains(k)));

return elementswithKeywords.Select(el => el.Element("link").Value).ToList();

}