Families and caskets (1)
Two families of casket-makers lived in Italy long ago. Bellini and his sons always put a true inscription on caskets they made, and Cellini and his sons always put a false inscription on caskets they made.
The families died off long ago, but the caskets and inscriptions remain. You come across two caskets made by the families.
Casket A reads: "This casket was not made by any son of Bellini."
Casket B reads: "This casket was made by one of the sons of Cellini."
Who made each casket?