@cochranecollab and @datalanguage use @OntotextGraphDB for a #knowledgeGraph of #COVID19 literature and systematic reviews. https://datalanguage.com/blog/how-knowledge-graph-technology-is-helping-cochrane-respond-to-covid-19#the-knowledge-graph

"A key pattern we are using here is the combination of @OntotextGraphDB with @ElasticSearch. One of the unique (killer) features of GraphDB is its ElasticSearch Connector plugin. "