In today’s era of abundant online news, tackling the spread of deceptive content and manipulative narratives has become crucial. This paper details our system for SemEval-2025 Task 10, focusing on Subtasks 1 (Entity Framing) and 3 (Narrative Extraction). We instruct-tuned quantized Microsoft’s Phi-4 model, incorporating prompt engineering techniques to enhance performance. Our approach involved experimenting with various LLMs, including LLaMA, Phi-4, RoBERTa, and XLM-R, utilizing both quantized large models and non-quantized small models. To improve accuracy, we employed structured prompts, iterative refinement with retry mechanisms, and integrated label taxonomy information. For subtask 1, we also fine-tuned a RoBERTa classifier to predict main entity roles before classifying the fine-grained roles with Phi-4 for the English language. For subtask 3, we instruct-tuned Phi-4 to generate structured explanations, incorporating details about the article and its dominant narrative. Our system achieves competitive results in Hindi and Russian for Subtask 1.

Tabular Question Answering (QA) is crucial for enabling automated reasoning over structured data, facilitating efficient information retrieval and decision-making across domains like finance, healthcare, and scientific research. This paper describes our system for the SemEval 2025 Task 8 on Question Answering over Tabular Data, specifically focusing on the DataBench QA and DataBench Lite QA subtasks. Our approach involves generating Python code using Large Language Models (LLMs) to extract answers from tabular data in a zero-shot setting. We investigate both multi-step Chain-of-Thought (CoT) and unified LLM approaches, where the latter demonstrates superior performance by minimizing error propagation and enhancing system stability. Our system prioritizes computational efficiency and scalability by minimizing the input data provided to the LLM, optimizing its ability to contextualize information effectively. We achieve this by sampling a minimal set of rows from the dataset and utilizing external execution with Python and Pandas to maintain efficiency. Our system achieved the highest accuracy amongst all small open-source models, ranking 1st in both subtasks.