Premise: S.S.C. Napoli won its first national championship with recently crowned World Champion Diego Maradona as the most influential player. Central defender Ciro Ferrara got his breakthrough, helping out the team to win the trophy. The two new signings Andrea Carnevale and Fernando De Napoli also proved crucial in the title-winning campaign, which sparked off fanatical celebrations in Naples.
Hypothesis: Diego Maradona was not newly signed.