Consider the following exchange:
- Teacher: How could you do that, Ralph?
- Ralph: I didn't teacher, I swear.
- Donny: Ralph is lying, Sir!
- Anthony: Donny is telling the truth, Sir! I support him
- Yuno: Don't be ridiculous, Anthony. You're the one that's lying.
What's the conclusion of this?
- Yuno can only tell the truth.