Text: To the left of the high altar is a small chapel whose 10th-century Madonna di Nicopeia, a bejeweled icon also from Constantinople, is said to have healing powers and is a runner-up as Venice's protective patron after St. Mark.
Entailment: The small chapel's Madonna di Nicopeia dates to the 10th century.
Contradiction: The chapel in its entirety was constructed 50 years ago.