Represents a phrase in the text that is a known entity, such as a
person, an organization, or location. The API associates information,
such as salience and mentions, with entities.
The entity type.
The salience score associated with the entity in the [0, 1.0]
range. The salience score for an entity provides information
about the importance or centrality of that entity to the
entire document text. Scores closer to 0 are less salient,
while scores closer to 1.0 are highly salient.
For calls to [AnalyzeEntitySentiment][] or if [AnnotateTextReq
uest.Features.extract_entity_sentiment][google.cloud.languag
e.v1.AnnotateTextRequest.Features.extract_entity_sentiment]
is set to true, this field will contain the aggregate
sentiment expressed for this entity in the provided document.
