Who's Lisa to Bart?
sister
Who's Marge to Lisa?
Mom
Who are Marge and Homer to children?
parents
Who's Bart to Marge and Homer?
son
Who's Lisa to Marge and Homer?
daughter
Who are Lisa and Maggie to Marge and Homer?
daughters
Who's Homer?
dad
Who's Maggie?
a baby
Who's Lisa to Homer?
daughter
Who are Marge and Homer?
Wife and husband
Who are Lisa, Bart and Maggie to Homer and Marge?
children