A Transformer and Data Augmentation-based Approach for Propaganda Identification and Classification - Sanchez Checa, Paula; Gallego Torres, Lucia; Sanchez Escudero, Marco Antonio; Petre Carastoian, Cosmin Octavian; Segura Bedmar, Isabel (Iberian Languages Evaluation Forum 2024 (IberLEF 2024), 2024)