Assertion: opal | /r/HasProperty | bad luck
Facets:
Source sentences:
text: Opals are bad luck.
text: Although once known as 'bad luck', opals are fast becoming one of the most sought after gemstones in jewellery collections.
text: Some people believe that Opal are bad luck.
text: Are opals bad luck?
text: Opals are bad luck
text: Opals are no bad luck