Is the following sentence factually correct?
"Lithium does not occur naturally, and is a man-made element."
Options:
- yes
- no
no
Lithium is natural and is among the first on the periodic table, though it is not overly common.

Does the following sentence make sense?
"The PlayStation 3 delivers entertainment for some people."
Options:
- yes
- no
yes
Though perhaps written like a subjective claim, the fact is it has deli ered entertainment to some people.

"Mike Tyson competed on the United States Olympic Gymnastics team."
Is the above claim true?
Options:
- yes
- no
no
Mike Tyson was a boxer, not a gymnast.

Is the following sentence factually correct?
"A short range missile was fired and detonated in the ocean by Cuban and Russian forces during the Cuban Missile Crisis but was kept secret to avoid all out nuclear war."
Options:
- yes
- no
no
Other then the two atomic bombs dropped on Japan during WWII, no other nuclear devices have been used during a conflict.