Is the following sentence factually correct?
"North Korea–United States relations seem to remain hostile."
Options:
- yes
- no

Let me think out loud. Relations between the Democratic People's Republic of Korea and the United States of America have been historically hostile since the Korean War. The answer is yes.

Claim: "Many Samurai wielded katanas, though there were several other weapons Samurai could use."
Is the claim above correct, and can it be verified by human common sense and without a web search?
Options:
- yes
- no

Let me think out loud. The katana is the most well known. They also used longbows, pole weapons, guns, and many others. The answer is yes.

"People were guided by J. Robert Oppenheimer in scientific endeavors."
Is the above claim true?
Options:
- yes
- no
Let me think out loud. J. Robert Oppenheimer directed the Manhattan Project seeking an atomic bomb. The answer is yes.