Assertion: cathedral's dome | /r/HasProperty | supported by wrought iron chains
Facets:
value: at intervals in the brick cone
type: LOCATION
value: to prevent spreading
type: PURPOSE
Source sentences:
text: Both the cone and the inner dome are 18 inches thick and are supported by wrought iron chains at intervals in the brick cone and around the cornice of the peristyle of the inner dome to prevent spreading and cracking.