In Numbers^x, Determiners^x, Negatives^x

I wonder if it matters whether the acronym designates an institution or not. I am familiar with a few acronyms that can take determiners, but they do not designate institutions. -- Can you check this account for me? -- Sure. What's the PIN? (Personal Identification Number) --...

Some; Used as a determiner to talk about a number of people or things. For example: Some people. Some chairs. I drank some coffee this morning. Some friends. Some cookies. Used as a quantifier to talk about things belonging to a group. For example: ...some of the things we...