Assertion: pyramid's layer | /r/HasProperty | built on top of each
Facets:
value: over many generations
type: TEMPORAL
Source sentences:
text: As Zaria Gorvett reports for the BBC, the pyramid was likely constructed with adobe - a type of brick made of out of baked mud - and features six layers built on top of each over many generations.
text: This pyramid has 7 different layers of buildings which were constructed on top of each other in order to update the building's religious power over time.