edit annotations section

Edited the annotations element section

docs/eml-semantic-annotations-primer.md

@@ -99,7 +99,7 @@ In the following attribute annotation (Example 3), the subject of the semantic s
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 ### Annotations in the `annotations` element
-The `annotations` element is nested under the `eml` root element and contains a list of annotations defining precise semantic statements for parts of a resource. An annotation represents a precisely-defined semantic statement that applies to the resource. This statement is used to associate precise semantics with a particular element in the EML document.
+The `annotations` element is nested under the `eml` root element and contains a list of annotations defining precise semantic statements for parts of a resource. An annotation represents a precisely-defined semantic statement that applies to the resource.
 
 The `annotations` element contains a set of `annotation` elements. Each `annotation` element has a `references` attribute that points to the `id` attribute of the element being annotated. Any of the EML modules may be referenced by the `references` attribute and the id must point to a unique id within the EML document. In the semantic statement, the *subject* is implicitly the element containing the id that is referenced. In other words, what is listed in the `references` attribute is the id of the subject of the semantic annotation. Each annotation also consists of a `propertyURI` element and `valueURI` element that respectively define the *object property* or *data property* and *object* (value) that apply to the resource. *A URI should ideally resolve to a controlled vocabulary that provides a precise definition, relationships to other terms, and multiple labels for displaying the statement*. Each `propertyURI` and `valueURI` element can have a `label` attribute that displays a label associated with each URI. Labels are intended to provide a more readable format for users and may be displayed in application interfaces. *It is recommended that labels are populated with values from the preferred labels field (skos:prefLabel) or label field (rdfs:label) from a controlled vocabulary*.