Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Island of Saint-Louis' has mentioned 'Jazz' in the following places:
Occurrence Sentence Text Source
The Saint-Louis Jazz Festival is the most important jazz festival in Africa.
Jazz first became popular in the 1930s when records produced in Cuba were aired on the radio.
After World War II, visiting U.S. GIs popularized jazz bands and by the 1950s local groups had adopted a "Cuban" sound.