Before revision:  This dataset is annotated with pre-existing user knowledge, message-level dialog acts, message grounding to Wikipedia,  user reactions to messages , and per-dialog ratings. Our analysis shows that responses which incorporate a user's prior knowledge do increase engagement.
After revision:  This dataset is annotated with pre-existing user knowledge, message-level dialog acts, message grounding to Wikipedia, user reactions to messages . Responses using a user's prior knowledge do increase engagement.