Here's why:
* Quality Adjectives describe a noun's characteristics: They tell you *what kind* of something it is. Examples: *big, red, happy, beautiful, soft*.
* "Some" is a quantifier: It indicates an indefinite amount or number. Examples: *some apples, some time, some people*.
Examples:
* Quality adjective: "The delicious apple is red." (Delicious describes the apple's taste)
* Quantifier: "I ate some apples." ("Some" tells us an indefinite amount of apples)
Let me know if you'd like more examples or have other questions!