edit RDF graphs section

NCEAS · Mar 12, 2019 · ab96e6b · ab96e6b
1 parent 5de6ca6
commit ab96e6b
Showing 1 changed file with 14 additions and 4 deletions.
diff --git a/docs/eml-semantic-annotations-primer.md b/docs/eml-semantic-annotations-primer.md
@@ -312,11 +312,18 @@ Taken together, the semantic statement could be read as "'adam.shepherd' (the cr
 </eml>
 ```
 
-## Example RDF Graphs 
-Below are examples of how annotations can be converted to RDF triples. The parts of a triple (subject, predicate, and object) 
-become nodes and links in a graph.
+## RDF Graphs 
 
-![RDF example A](images/RDF_example_a.png "Graph from Example 3 (attribute annotation):")
+A graph consists of resources linked to other resources. There isn't a root or hierarchy structure, indicating that  
+
+The parts of a triple (subject, predicate, and object) become nodes and links in a graph. 
+
+Below are examples of how annotations can be converted to RDF triples in RDF/XML, so that they are now computer-readable. Be aware that there are several formats for serializing RDF, including RDF/XML, Turtle, N-Triples, and N3, that vary in how human-readable they are.
+
+### Graph from Example 3 (attribute annotation):
+
+
+![RDF example A](images/RDF_example_a.png "Graph from Example 3 (attribute annotation):") 
 
 ```xml
 <rdf:RDF
@@ -333,6 +340,9 @@ become nodes and links in a graph.
 ```
 _Note: The subject described in the `rdf:Description` `about` attribute should actually be the globally unique URI for the attribute, rather than 'att.4'_
 
+
+### Graph from Example 4 (using `annotations` element):
+
 ![RDF example B](images/RDF_example_b.png "Graph from Example 4 (using <annotations> element):")
 
 ```xml