Assertion: west african nation | /r/HasProperty | key factor
Facets:
value: by the portuguese
type: OTHER
value: in keeping
type: OTHER
Source sentences:
text: The Gambia shares historical roots with many other West African nations in the slave trade, which was the key factor in the placing and keeping of a colony on the Gambia River, first by the Portuguese, during which era it was known as A Gâmbia.