Which sentence states a fact?

 - The mummy of King Tut was discovered in 1922.
 - King Tut was a weak and unimportant ruler.
The first sentence states a fact.
The mummy of King Tut was discovered in 1922.
It can be proved by reading a book or an article about King Tut.
The second sentence states an opinion.
King Tut was a weak and unimportant ruler.
Weak and unimportant shows what a person believes, thinks, or feels. Another person might have a different opinion about what kind of ruler King Tut was.