https://en.wikipedia.org/wiki/Majority has a bunch of variations and contexts listed, where it might differ what "Majority" is actually referencing.
Have reason be optional and instruct it to only provide reason for the middle "Mostly True" or "Misleading".
The statistic is about commercial production, not number akmonds grown.
Looks safe to say that even majority of almonds are not grown in California.
> California produces 80% of the world's almonds and 100% of the United States commercial supply
But regardless of which number we use, California represents a large portion of US almond production, so much so that misleading could be an acceptable answer if the LLM interpreted the prompt as an exaggeration. I think the example was apt
You find one almond tree outside of California that grows almonds, where such almonds are grown intentionally, and the claim is false.