A Chunk is a subset of a Message. Annotations at the Chunk level directly apply to that part of the Message. For example, a single sentence in a paragraph could be a Chunk with its own Annotations.
type
string
required

The type of chunked data.

annotations
(Integer · object | Boolean · object | Text · object | Category · object | Category-Multiple · object | File · object | Workspace Container · object | Ranked Choices · object | Ranked Groups · object)[]
required

Annotations for a chunk of the message.

text
string
required

A plain text field.