Anchor: Over the centuries, the country's prosperity has come from its coastal plains, wider on the west than the east side of the peninsula.
Entailed: The coastal plains are narrower on the east side of the peninsula than the west side.
Contradiction: Over the centuries, the country's prosperity has come from slave trade. 
Contradiction: It just depends on who's going to not exploit us then.
Contradiction: A person posing
Contradiction: This kind of qualification looks like it's often evaded, according to people who are unsure.
Contradiction: People stroll along the beach.