Question: Who is the league top scorer in the 1990-1991 U.C. Sampdoria season currently a commentator for?
{'answer': 'Sky Sport Italia', 'supporting_facts': [['1990–91 U.C. Sampdoria season', 0], ['1990–91 U.C. Sampdoria season', 1], ['Gianluca Vialli', 1]]}