responder
The participant was an interlocutor in some sort of discourse event, but only reacted to the contributions of others.
This person's voice can be heard (or their words can be read) in the resource, typically saying the language-appropriate equivalent of "uh-huh", "amen", "you don't say", etc. This role is sometimes referred to as a "yes-sayer", "backchanneler, or "co-conversant".
The value of this property is expected to be one of the types: schema:Person schema:Organization
This property is used on the type: schema:CreativeWork
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