is the reason why we have a small circle and a bigger circle because the small one is a subset and the bigger one is the superset? can anyone please clarify

Does anyone know what the meaning of Indicator in "indicator or qualifier" here means? I know the definition of qualifier here is "A quantifier is a word that usually goes before a noun to express the quantity of the object; for example, a little milk." but what would be the meaning of indicator here? I dont believe its referring to it as an indicator word.

#help

reading the comments below to look for some extra clarification but I see everyone seems lost as well.

Starting the video talking and howing superset and subset circles made me think throughout the video that all small circles were the subsets and all large circles were the supersets.

but I think I'm wrong, right?

Does anyone else see this video in a negative contrast image? never in color just a black, white and green color

hello, I believe so. It can be included as supporting documentation.

Im open to meet up though I'm just getting my feet wet in this. Let me know if still interested.

Question 5 is brutal.