Assertion: opal | /r/HasProperty | lucky
Facets:
value: in the middle ages
type: TEMPORAL
Source sentences:
text: In the Middle Ages, opals were considered lucky and some even believed that an opal wrapped in a bay leaf would provide the owner with the power of invisibility.
text: In the Middle Ages, opals were considered lucky and some even believed that an opal wrapped in a bay leaf would provide the owner with the power of invisibility.