Answer the following question: Claim: "The American actor Chuck Norris practices tang soo do."
Is the claim above correct, and can it be verified by human common sense and without a web search?
Options:
- yes
- no
My answer and thoughts: The answer is yes.
Chain of thoughts: The factual information about Chuck Norris is stated above.

Answer the following question: "A natural Monopoly can develop when a company becomes a Monopoly due to its industry's high fixed or startup costs."
Is the above claim true?
Options:
- yes
- no
My answer and thoughts: The answer is yes.
Chain of thoughts: Natural monopolies can exist when there are high barriers to entry.

Answer the following question: Claim: "Poul Anderson married Karen Kruse in 1953 and moved with her to the San Francisco Bay area."
Is the claim above correct, and can it be verified by human common sense and without a web search?
Options:
- yes
- no
My answer and thoughts:
The answer is yes.
Chain of thoughts: Karen Kruse published fiction and essays solo and in collaboration with her husband, Poul Anderson and others.