Premise: Beyond the modern ferry port, a 350-metre (1,050-foot) causeway connects Kuradase to Gevercin Adase (Pigeon Island), which is topped by a 13th-century Byzantine castle and ringed with gardens and colourful cafe.

Hypothesis: Kurdase is not connected to Pigeon Island, so the only way to get to the island is by boat.
Relation: contradiction