A modifier is a word or phrase that modifies (i.e. changes) the meaning of another word or phrase. Restrictive modifiers add essential information that limits meaning, while non-restrictive modifiers add non-essential information. Commas are used to set off non-restrictive modifiers because they are not essential to the meaning of the sentence. Which sentences in the list below demonstrate correct use of commas? Select all that apply.

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The Savannah Visitor Center, located in the restored Central of Georgia railroad station, is also home to the Savannah History Museum.


The thirteenth colony, Georgia, was named after King George II.


Amy Pond, a professor at the University of Gallifrey, runs a fundraiser every year to support the local homeless shelter.


University of Gallifrey professor, John Smith, is a collector of classic timepieces and other time-related oddities.


Every square in Savannah contains a monument. The Chippewa Square monument dedicated in 1910 was created by sculptor Daniel Chester French.