3arif: A Corpus of Modern Standard and Egyptian Arabic Tweets Annotated for Epistemic Modality Using Interactive Crowdsourcing Rania Al-Sabbagh author Roxana Girju author Jana Diesner author 2014-08 text Proceedings of COLING 2014, the 25th International Conference on Computational Linguistics: Technical Papers Junichi Tsujii editor Jan Hajic editor Dublin City University and Association for Computational Linguistics Dublin, Ireland conference publication al-sabbagh-etal-2014-3arif https://aclanthology.org/C14-1144/ 2014-08 1521 1532