Venn diagrams--graphical representation of sets Universal set--all objects under consideration circles often represent sets within the universe Union A, B are sets.
(sets; set; Universal) (B; are; sets) Context(B are,List([153, 158))):(Venn diagrams; represent; sets within the universe Union A; T:often)
B are,List([153, 158))
sets B Venn diagrams
set are represent
Universal
sets
sets within the universe Union A T:often