The punctuation which can be used to set off non-restrictive elements in a sentence are; commas and hyphens.
Non-restrictive elements in a sentence
Non-restrictive elements in a sentence may come in different forms, However, this non-restrictive elements usually come in form of clauses.
The major punctuation mark used to set them off are the comma and sometimes the hyphen.
Example of such sentence with non-restrictive element is the sentence below;
John, whose sister is a teacher , will be having dinner with us.
Read more on non-restrictive elements;
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