{"object_type":"df_transaction_reference","event_type":"DATASET_LICENSING","buyer":"Microsoft","seller":"HarperCollins","asset_description":"Book corpus datasets used to train large language models","reported_price":"$1,667 per book title annually","confidence":"Medium-High","region":"Global","_attribution":{"source":"DatFlash","publisher":"DataUniversa","retrieved":"2024","note":"Observed transaction reference. No normalization or appraisal applied."}}