Question: What nationality is Folarin Ogunsola, a swimmer who competes for the smallest nation in mainland Africa?
Sentence (from "Folarin Ogunsola"): He competed in the 50 m freestyle and 50 m backstroke events (the latter of which he did not start) at the 2011 World Aquatics Championships and in the 50 m freestyle and 50 m butterfly events at the 2013 World Aquatics Championships.
Relevant evidence: No