Question 1: Bobbi and Bob Cat were brought to an animal shelter. An animal shelter is a place where injured animal are cared for.

Answer: Bobbi and Bob Cat were brought to an animal shelter, a place caring for injured animals.

Question 2: Bob Cat’s health condition was identified by a volunteer. The volunteer was a young man trained as a veterinarian.

Answer: Bob Cat’s health condition was identified by a volunteer, a young man who was trained as a veterinarian.

If the starter sentence was not given as Bob Cat’s………  it can be written as:

A volunteer,  young man who was trained as a veterinarian, identified Bob Cat’s health condition.

An apposition is the extended information about the noun so commas are important to keep the information independent as an extension.

Thanks sushi88!

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