Update README.md

README.md

@@ -1,3 +1,30 @@
 ---
 license: apache-2.0
+language:
+- ar
 ---
+### Dataset Description
+
+**Paper**: [OCA: Opinion corpus for Arabic. Journal of the American Society for Information Science and Technology.](https://onlinelibrary.wiley.com/doi/pdf/10.1002/asi.21598)
+
+**Point of Contact**: msaleh@ujaen.es, jmperea@ujaen.es
+
+OCA is an Arabic corpus of movie reviews. This corpus has been generated from comments in Arabic obtained from different web pages
+
+### Licensing Information
+
+OCA is released under the [Apache-2.0 License](http://www.apache.org/licenses/LICENSE-2.0). 
+
+### Citation Information
+```bibtex
+@article{article,
+author = {Saleh, Mohammed and Martín-Valdivia, Maria and López, L. and Perea-Ortega, José},
+year = {2011},
+month = {10},
+pages = {2045-2054},
+title = {OCA: Opinion corpus for Arabic},
+volume = {62},
+journal = {JASIST},
+doi = {10.1002/asi.21598}
+}
+```