Question: The town home to what Fort has the graveyard of an African from what is now Ghana, who became a respected philosopher and teacher at the universities of Halle and Jena in Germany after studying there?
Sentence (from "Shama, Ghana"): Shama or Shema is a town with a fishing village, and is the capital of Shama district, a district in the Western Region of Ghana.
Relevant evidence: No