As mentioned before, the original dataset (Wang, 2017) contains only the sources "S1: Statement", "S2: Metadata" and "S3: History" and we enrich the dataset by adding the fourth source "S4: Report".
we only report combinations with news content (i.e., S1), all sources in the original dataset (i.e., S1+S2+S3) and all sources in the enriched dataset (i.e., S1+S2+S3+S4).