Does the following sentence make sense?
"San Diego County California encompasses the San Diego metro area and is in southern California."
Options:
- yes
- no
yes
San Diego County, California is where you can find San Diego, and other landmarks around the city.

Is the following a factual statement?
"Jane Austen novels were written by hand."
Options:
- yes
- no
yes
Jane Austen wrote in an era when writing by hand was the only technology available.

Is the following a factual statement?
"Sonic the Hedgehog runs extremely fast and that is one his most iconic abilities."
Options:
- yes
- no
yes
It's a fact that Sonic runs extremely fast in his games.

Claim: "White blood cell acts as your bodies key immune system cell, called Leukocytes."
Is the claim above correct, and can it be verified by human common sense and without a web search?
Options:
- yes
- no
yes
White blood cell play a key role in keeping your body from getting ill.