Update README.md

README.md

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   - split: train
     path: data/train-*
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+
+## PUG: SPAR
+PUG: SPAR (Scene, Position, Attribute, Relation) contains 43,560 test samples, with image-caption pairs that evaluate VLMs scene and object recognition, as well as inter-object and object-attribute relationships respectively. We utilize scenes containing up to two objects in 4 unique spatial relationships and 4 different texture variations.
+
+## LICENSE
+The datasets are distributed under the CC-BY-NC, with the addenda that they should not be used to train Generative AI models.
+
+## Citing PUG
+If you use one of the PUG datasets, please cite:
+```
+@misc{bordes2023pug,
+      title={PUG: Photorealistic and Semantically Controllable Synthetic Data for Representation Learning}, 
+      author={Florian Bordes and Shashank Shekhar and Mark Ibrahim and Diane Bouchacourt and Pascal Vincent and Ari S. Morcos},
+      year={2023},
+      eprint={2308.03977},
+      archivePrefix={arXiv},
+      primaryClass={cs.CV}
+}
+```
+
+## To learn more about the PUG datasets:
+Please visit the [website](https://pug.metademolab.com/) and the [github](https://github.com/facebookresearch/PUG)