Which list of places require semicolons instead of a comma

1. Paris, France; Barcelona, Spain; Rome, Italy.

2. John Smith, CEO; Sarah Johnson, CFO; Robert Williams, COO.
3. The cat meowed loudly; the dog barked incessantly; the bird chirped sporadically.

There are several situations where you would use a semicolon instead of a comma in a list. Here are a few examples:

1. When separating items in a complex list:
- I need to buy apples from the grocery store; pens, pencils, and notebooks from the stationery shop; and milk, bread, and eggs from the supermarket.

2. When the items in the list already contain commas:
- The guests at the party included John, the lawyer from New York; Alice, the doctor from Los Angeles; and David, the teacher from Chicago.

3. When individual items in the list are long or contain internal punctuation:
- My favorite books are "To Kill a Mockingbird," by Harper Lee; "1984," by George Orwell; and "The Catcher in the Rye," by J.D. Salinger.

Remember, the use of semicolons instead of commas in a list is a matter of style and clarity. It is always important to consider the specific context and the level of formality when deciding whether to use a semicolon or a comma.

Semicolons are often used to separate items in a list when those items already contain commas. This is known as the "super comma" or "semicolon usage" in English grammar.

One common use of semicolons in lists is when the items in the list themselves contain commas. Here are a few examples of lists where semicolons should be used instead of commas:

1. Series of locations: When listing multiple geographical locations, if any of the locations themselves have additional information separated by commas, semicolons should be used. For instance:
- I have been to Paris, France; Rome, Italy; and Berlin, Germany.

2. Lists of dates and times: If you are listing a series of dates or times, and any of the items within the list contains commas, semicolons should be used. For example:
- The conference will take place on January 5, 2022, from 9:00 AM to 5:00 PM; January 6, 2022, from 10:00 AM to 4:00 PM; and January 7, 2022, from 9:30 AM to 3:00 PM.

3. Listing authors and their affiliations: When citing multiple authors with their affiliations in academic or scientific papers, semicolons are used to separate the authors and their affiliations. For instance:
- John Doe; Department of Biology, University of ABC
- Jane Smith; Department of Chemistry, University of XYZ

It's worth noting that there may be other instances where semicolons are used in lists, particularly in specialized writing contexts. However, the examples above cover some of the most commonly encountered situations.