task_categories:visual-question-answering task_categories:image-classification task_categories:object-detection language:en license:cc-by-4.0 size_categories:1K<n<10K format:imagefolder modality:image modality:geospatial library:datasets library:mlcroissant arxiv:1902.09506 region:us geographic-maps question-answering legend-detection geospatial chart-understanding gis