Premise: For centuries, the Sephardic Jewish neighborhoods of cities from Tangier, Fez, and Amsterdam to Salonika, Istanbul, and Aleppo echoed with Ladino, a 15th-century Castilian dialect (sprinkled with Hebrew words) spoken by the Spanish exiles wherever they settled.

Hypothesis: No cities have any residents who speak the Ladino dialect, because it is largely a dead dialect.
Relation: contradiction