Figuring it out because the restaurant recommended by Chester doesn’t seem too slender down any further. The cafe that Chester advisable is an incredible restaurant. Posey’s Cafe, which Chester beneficial, is an improbable restaurant. The clause “that Chester recommended” is important info in the sentence above. A restrictive clause provides necessary information about something you may have mentioned in a sentence. A nonrestrictive clause provides additional details about one thing you have mentioned in a sentence. However, the knowledge isn’t essential to determine the factor you’re talking about. Like that would be an impolite factor to state. And not using a serial comma, it seems to be like “Jane Austen and Albert Einstein” is an appositive, somewhat than two more components in a listing.