Assertion: purple | /r/HasProperty | expensive
Facets:
value: very
type: DEGREE
Source sentences:
text: This fits within a historical context, too, because purple was often a color that was very expensive and difficult to make and manufacture.
text: This was a big deal because, until then, purple could only be made using natural dyes and had been so expensive to make, it had become one of the most coveted colours.