About
A subject of conversation which is:
- Not necessarily an entity, which is often a proper named item such as a person or company.
- And not a theme which is a concept that occurs in the content.
A facet is a more generic “thing” being discussed.
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Example
In this sentence: “When we visited X restaurant on Thursday, the service was fantastic.” you could find “service” as a facet with “fantastic” as an attribute of that facet.