Update README.md

README.md

@@ -40,15 +40,25 @@ configs:
 
 Multilingual chart question answering dataset. Each language is a separate config (subset).
 
+## Description
+
+This dataset is a multilingual translation of [PlotQA](https://github.com/NiteshMethani/PlotQA), a large-scale chart question answering benchmark built on synthetically generated bar, line and pie charts. PlotQA pairs rendered charts with template-based questions and answers about values, comparisons, trends and chart structure, and was originally released in English only.
+
+Here, the questions and answers of PlotQA have been translated into Italian, French, German and Spanish using the large language model [Qwen/Qwen3.5-122B-A10B](https://huggingface.co/Qwen/Qwen3.5-122B-A10B). The charts were not simply reused: they were re-rendered in each of the four languages, translating the text embedded in the images as well (axis labels, tick labels, legends, titles and other in-chart text), so that the visual content is fully localized and consistent with the translated questions and answers. The English config (`en`) contains the original, untranslated data.
+
+Qwen3.5-122B-A10B was chosen because it is a permissive model that does not impose restrictions on the use of the data it generates, which makes the resulting translations safe to redistribute under this dataset's license.
+
+**This is not a parallel dataset:** the same entries are not present in every language. About 40% of the original PlotQA data is kept in English, while the remaining 60% is split across the other four languages. Each config is therefore a distinct subset of the source data, and the configs should not be aligned row by row.
+
 ## Configs
 
-| config | language | rows | size |
-|--------|----------|------|------|
-| `en` | English | 8,109,641 | 2.6 GB |
-| `it` | Italian | 3,031,539 | 998.4 MB |
-| `fr` | French | 3,057,816 | 1.1 GB |
-| `de` | German | 3,010,298 | 1.1 GB |
-| `es` | Spanish | 3,040,185 | 1.1 GB |
+| config | language | rows | size | share of total |
+|--------|----------|------|------|----------------|
+| `en` | English | 8,109,641 | 2.6 GB | ~40% |
+| `it` | Italian | 3,031,539 | 998.4 MB | ~15% |
+| `fr` | French | 3,057,816 | 1.1 GB | ~15% |
+| `de` | German | 3,010,298 | 1.1 GB | ~15% |
+| `es` | Spanish | 3,040,185 | 1.1 GB | ~15% |
 
 ## Schema