Premise: Venice's dazzling basilica, the Doges' Palace (Palazzo Ducale), and the 500-year-old Clock Tower (Torre dell'Orologio), all within the sprawling Piazza San Marco and adjacent Piazzetta, are the very focus of the city's life.
Hypothesis: There is nothing of interest or note in the Piazza San Marco or the Piazzetta 
Label: contradiction