Assertion: coral reef's structure | /r/HasProperty | reduced to rubble
Facets:
Source sentences:
text: We saw on several reefs that a significant amount of corals were broken, rolled around on the bottom and killed, or just smashed up to the point that the actual structure of the reef itself was reduced to rubble,” said Craig Dahlgren, lead researcher at the Perry Institute, which has been examining effects of the hurricane since October.