Assertion: cakewalk | /r/HasAspect | its formal beginning
Facets:
value: in the 1870
type: TEMPORAL
Source sentences:
text: Although the American cakewalk dates back to the early days of slavery, the cakewalk as a distinct music and dance style had its formal beginning in the 1870's and reached its peak of popularity at the end of the 19th century and early 20th century.