Yes / no, is the following a verifiable fact?
"Joseph Hooker resigned from United States Army, when General Halleck and Lincoln declined his request for reinforcements."
yes
Hooker was kept in command and served Army till 1868.

"Food poisoning can cause major irritation to the Gastrointestinal tract."
Is the above claim true?
Options:
- yes
- no
yes
This is true because food poisoning directly affects the gastrointestinal tract.

Is the following a factual statement?
"Christopher Columbus discovered the continent of America."
Options:
- yes
- no
no
It is common knowledge that there were already people living in the Americas before the arrival of Columbus.

Does the following sentence make sense?
"Seinfeld primarily features four friends -- Jerry, George, Elaine, and Kramer -- throughout their daily lives."
Options:
- yes
- no
yes
This is an accurate short summary of the show Seinfeld.