adding new paper

README.md

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+## Extraction of BPMN process models from unstructured textual descriptions
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+> you can go to the [paper](https://www.researchgate.net/profile/Bruno-Zirnstein/publication/380007531_Extraction_of_BPMN_process_models_from_unstructured_textual_descriptions/links/6627ab8966ba7e2359f2ffce/Extraction-of-BPMN-process-models-from-unstructured-textual-descriptions.pdf).
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+<p>paper describes the generation of bpmn from unstructured text.</p>
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 ## Process Modeling With Large Language Models
 
 > you can go to the [paper](https://arxiv.org/pdf/2403.07541v1).