There is a scene in Dina Zvi-Riklis' award-winning drama, "Three Mothers," in which Gila Almagor, once a popular singer, stages a comeback concert to raise money for her sister, Yasmin, who needs a kidney transplant. At the start of the concert, she introduces herself as one of three sisters. "Sixty years ago, my sisters and I were born in Alexandria, in Egypt. We're triplets," she says, with a coy smile. "Triplets are like twins, but a lot harder."