task_categories:image-text-to-text task_categories:question-answering language:en license:apache-2.0 size_categories:10K<n<100K format:parquet modality:image modality:text library:datasets library:dask library:mlcroissant library:polars arxiv:2509.21268 region:us multimodal reasoning chain-of-thought reinforcement-learning mathematics science charts visual-question-answering multimodal-llm