The collection of PHI entities extracted from the input text and their
associated information. For each entity, the response provides the entity
text, the entity category, where the entity text begins and ends, and the
level of confidence that Amazon Comprehend Medical has in its detection.
The version of the model used to analyze the documents. The version number
looks like X.X.X. You can use this information to track the model used for a
particular batch of documents.