Assertion: progressive collapse | /r/HasProperty | accidental
Facets:
value: due to errors
type: CAUSE
value: due to material failure
type: CAUSE
value: due to natural phenomenon
type: CAUSE
value: due to design deficiencies
type: CAUSE
Source sentences:
text: Progressive collapses may be accidental, due to design deficiencies or errors, material failure or natural phenomenon (e.g. earthquakes).