The problem isn't a lack of specificity in English punctuation. I suspect it's more that few students get their writing corrected on this level. One unambiguous

The problem isn't a lack of specificity in English punctuation. I suspect it's more that few students get their writing corrected on this level. One unambiguous solution is proper use of the colon and semi-colon. She invited several people: her father, a tuba player; her uncle, who played the guitar; and her boyfriend, a drifting wastrel of a youth generally despised by the rest of the family.