Assertion: pyramid's structure | /r/HasProperty | developed by gustav freytag
Facets:
value: in the mid 19th century
type: TEMPORAL
Source sentences:
text: Developed by Gustav Freytag in the mid 19th century, this structure has become so ubiquitous, many of the best writers have used it to write their own stories, even if they didn’t know it was called Freytag’s Pyramid.