**Q**
Claim: "Pink Floyd released several all time great rock songs."
Is the claim above correct, and can it be verified by human common sense and without a web search?
Options:
- yes
- no
**A**
yes
They released several classic rock songs over numerous years that are considered some of the best rock songs of all time.


Yes / no, is the following a verifiable fact?
"Wheat, a cereal grain, a worldwide staple food, is also an important source of carbohydrates."
yes
Wheat is a grass widely cultivated for its seed as it is a food.


**Q**
Is the following sentence factually correct?
"Leo Tolstoy wrote novels that are now considered classics."
Options:
- yes
- no
**A**
yes
He wrote War and Peace and Anna Karenina which often show up on lists of classic noveks.


Yes / no, is the following a verifiable fact?
"It is pretty typical that someone in Florida will see a Monarch butterfly in their lifetime."
yes
The monarch butterfly is a common butterfly of North America.


**Q**
Is the following statement true?
"Vitamin C prevents and treats the disease scurvy."
**A**
yes
It is commonly known that scurvy affected pirates and that bringing fruits rich in vitamin C helped them overcome it.


**Q**
Does the following sentence make sense?
"John D. Rockefeller established Standard oil."
Options:
- yes
- no
**A**
yes
In 1870, John D. Rockefeller established Standard Oil, which by the early 1880s controlled some 90 percent of U.S. refineries and pipelines.