Update Knowledg Graph Representation (RDF and Property Graph) and Schema.md

heathersherry · web-flow · commit 2e9d5ecedf3a · 2021-06-15T23:32:12.000+08:00
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 ## Knowledg Graph Representation (RDF and Property Graph) and Schema
-In my understanding, there are two major approaches to store and query knowledge graphs: one is RDF (Resource Description Framework) data model with SPARQL query language, and the other is property graph model with graph query languages such as Gremlin and Cypher. 
+There are two major approaches to store and query knowledge graphs: (1) RDF (Resource Description Framework) data model with SPARQL query language, (2) property graph model with graph query languages such as Cypher. 
 
 ### RDF 
 __Surveys__
