It seems quite doable to handle "shirt without stripes" in the following way:
1) Gather all items labeled as "shirts" (among other labels)
2) Filter out any labels that includes "stripes"
A shirt doesn't have to be labeled "shirt without stripes" for this to work. A shirt labeled "shirt with stripes" or "striped shirt" would not match, and lots of other shirts (solid shirts, shirts with prints, whatever) would match just fine.
1) Gather all items labeled as "shirts" (among other labels) 2) Filter out any labels that includes "stripes"
A shirt doesn't have to be labeled "shirt without stripes" for this to work. A shirt labeled "shirt with stripes" or "striped shirt" would not match, and lots of other shirts (solid shirts, shirts with prints, whatever) would match just fine.