Which sentence states a fact?

 - Spinach tastes worse than any other vegetable.
 - The spinach plant is native to Asia.
The first sentence states a fact.
The spinach plant is native to Asia.
It can be proved by looking up information about spinach.
The second sentence states an opinion.
Spinach tastes worse than any other vegetable.
Worse shows what a person believes, thinks, or feels. Another person might have a different opinion about what makes one vegetable taste worse than another.