If set A = children who like apples, and B = children wearing blue shoes, A ∩ B' translates as
Children who do not like apples and are not wearing blue shoes.
Children who do like apples or are not wearing blue shoes.
Children who do like apples and are not wearing blue shoes.
The children in A ∩ B' are
{Beto, Jennifer, Diana, Elena, Lin}
{Aida, Franco, Huan}
{Beto, Jennifer}