Question: Which son of Bernardo Mattarella was an elected judge on the Constitutional Court?
Sentence (from "Sergio Mattarella"): Sergio Mattarella, {'1': ", '2': ", '3': 'OMRI, OMCA', '4': "} (] ; born 23 July 1941) is an Italian politician, lawyer and judge who is the 12th and current President of Italy since 2015.
Relevant evidence: No