Swami is a tool to automatically extract test oracles and generate executable tests from structured natural language specifications. A research paper describing Swami, its underlying technique, and its evaluation, titled "Automatically Generating Precise Oracles from Structured Natural Language Specifications" has been published in The International Conference on Software Engineering (ICSE) 2019.
Paper: https://people.cs.umass.edu/~brun/pubs/pubs/Motwani19icse.pdf
Conference: https://conf.researchr.org/home/icse-2019