Text: Even today, there are those on Porto Santo who will tell you that it was due to his time spent there that Christopher Columbus learned navigation techniques and the ways of the ocean, and found the inspiration to undertake his voyage of 1492.
Entailment: Some of the people on the island believe that Christopher Columbus was inspired by things he learned on the island.
Contradiction: People on Porto Santo are adamant that the place had nothing to do with Columbus's voyage.