**Q**
Is the following sentence factually correct?
"Astronomers study the Samsung Galaxy S II using telescopes."
Options:
- yes
- no
**A**
no
It's not a galaxy in space, it's the name of a smartphone.

**Q**
Claim: "Twin represents a pair of children or animals born at the same birth."
Is the claim above correct, and can it be verified by human common sense and without a web search?
Options:
- yes
- no
**A**
yes
Twins are two offspring produced by the same pregnancy.

**Q**
"Zheng Jie does not put in a lot of practice time."
Is the above claim true?
Options:
- yes
- no
**A**
no
Professional tennis players have to practice a lot to be where they are in the game.