Sometimes, an original post is not present in a search, but engagements with the post are a large factor in the conversation. (Examples would be when the original post is outside the time frame of the data collected, or when the search is limited to a subset of users—such as a panel or particular location—who reposted or commented on a viral post). It's possible to identify these by exporting all results and tabulating the most common Parent ID, but this would be very useful to have in-platform.