diff --git a/examples/crossover_heist/crossover_heist.json b/examples/crossover_heist/crossover_heist.json
index 29e8b2f2..9d5dd1fa 100644
--- a/examples/crossover_heist/crossover_heist.json
+++ b/examples/crossover_heist/crossover_heist.json
@@ -303,6 +303,10 @@
                 "@value": "a1ecc7523855f23f3f9a96e3ec0f53ece109cd7d"
             }
         },
+        {
+            "@id": "kb:EmailAccount-ca4bc5e3-33a7-4457-b106-d0213e248979",
+            "rdfs:comment": "TODO - Discuss."
+        },
         {
             "@id": "kb:lnkfile-487b236d-e75d-467e-9c6d-dad2d12cf94e",
             "@type": "uco-observable:File",
diff --git a/examples/crossover_linked/crossover_linked_validation.ttl b/examples/crossover_linked/crossover_linked_validation.ttl
new file mode 100644
index 00000000..cd9dd7fc
--- /dev/null
+++ b/examples/crossover_linked/crossover_linked_validation.ttl
@@ -0,0 +1,45 @@
+@prefix observable: <https://ontology.unifiedcyberontology.org/uco/observable/> .
+@prefix owl: <http://www.w3.org/2002/07/owl#> .
+@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+@prefix sh: <http://www.w3.org/ns/shacl#> .
+@prefix vocabulary: <https://ontology.unifiedcyberontology.org/uco/vocabulary/> .
+@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
+
+[]
+	a sh:ValidationReport ;
+	sh:conforms "true"^^xsd:boolean ;
+	sh:result
+		[
+			a sh:ValidationResult ;
+			sh:focusNode <http://example.org/kb/account-facet-2ff9009c-69d9-4f96-8cdf-d282ecae4a24> ;
+			sh:resultMessage "Value is outside the default vocabulary AccountTypeVocab." ;
+			sh:resultPath observable:accountType ;
+			sh:resultSeverity sh:Info ;
+			sh:sourceConstraintComponent sh:DatatypeConstraintComponent ;
+			sh:sourceShape [
+				sh:datatype vocabulary:AccountTypeVocab ;
+				sh:message "Value is outside the default vocabulary AccountTypeVocab." ;
+				sh:path observable:accountType ;
+				sh:severity sh:Info ;
+			] ;
+			sh:value "Phone" ;
+		] ,
+		[
+			a sh:ValidationResult ;
+			sh:focusNode <http://example.org/kb/account-facet-a1397192-d69e-427a-ba4a-b55afc4480f5> ;
+			sh:resultMessage "Value is outside the default vocabulary AccountTypeVocab." ;
+			sh:resultPath observable:accountType ;
+			sh:resultSeverity sh:Info ;
+			sh:sourceConstraintComponent sh:DatatypeConstraintComponent ;
+			sh:sourceShape [
+				sh:datatype vocabulary:AccountTypeVocab ;
+				sh:message "Value is outside the default vocabulary AccountTypeVocab." ;
+				sh:path observable:accountType ;
+				sh:severity sh:Info ;
+			] ;
+			sh:value "Phone" ;
+		]
+		;
+	.
+
diff --git a/examples/crossover_linked/query-email_addresses_in_common.html b/examples/crossover_linked/query-email_addresses_in_common.html
new file mode 100644
index 00000000..2863ab80
--- /dev/null
+++ b/examples/crossover_linked/query-email_addresses_in_common.html
@@ -0,0 +1,24 @@
+<table border="1" class="dataframe table table-bordered table-condensed">
+  <thead>
+    <tr style="text-align: right;">
+      <th>?lAddressValue</th>
+      <th>?lInvestigationName</th>
+      <th>?nInvestigation</th>
+      <th>?nEmailAddress</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td>aresthewerewolf@gmail.com &lt;aresthewerewolf&gt;</td>
+      <td>CROSSOVER_2018_11191001</td>
+      <td>kb:Investigation1-85c7b8d1-54e0-4023-847a-20e0f55dd48e</td>
+      <td>kb:EmailAddress-d2bc0936-e1c5-4b55-8a1b-af2b3a2b145c</td>
+    </tr>
+    <tr>
+      <td>badquinn3@gmail.com</td>
+      <td>CROSSOVER_2018_12111001</td>
+      <td>kb:investigation-99892fd4-ea24-46b5-be68-a69978d6ab98</td>
+      <td>kb:emailaddress-456a2bac-8c21-11e9-8902-0c4de9c24de5</td>
+    </tr>
+  </tbody>
+</table>
diff --git a/examples/crossover_wmd/crossover_wmd.json b/examples/crossover_wmd/crossover_wmd.json
index 7b424bfb..aef11a63 100644
--- a/examples/crossover_wmd/crossover_wmd.json
+++ b/examples/crossover_wmd/crossover_wmd.json
@@ -278,7 +278,9 @@
                     "uco-observable:bodyRaw": {
                         "@id": "kb:contentdata-f3b4a8da-d3ba-46b7-a7a0-3c17ec13648d"
                     },
-                    "uco-observable:fromRef": null,
+                    "uco-observable:from": {
+                        "@id": "kb:emailaddress-456a2bac-8c21-11e9-8902-0c4de9c24de5"
+                    },
                     "uco-observable:toRef": null,
                     "uco-observable:ccRefs": null,
                     "uco-observable:bccRefs": null,
@@ -860,6 +862,14 @@
                 }
             ]
         },
+        {
+            "@id": "kb:emailaccount-99d72bac-8c21-11e9-8902-0c4de9c21b53",
+            "rdfs:comment": "TODO - Discuss."
+        },
+        {
+            "@id": "kb:email-message-facet-6c0d5813-5557-481d-95f3-b5f660e3e102",
+            "rdfs:comment": "TODO - Fill out, or delete, the incomplete 'ref' triples."
+        },
         {
             "@id": "kb:url-39ff4987-8ae5-47e3-8369-dbd0d5f79398",
             "@type": "uco-observable:URL",
diff --git a/examples/crossover_wmd/index.html b/examples/crossover_wmd/index.html
index 9a5653a3..6d6214a5 100644
--- a/examples/crossover_wmd/index.html
+++ b/examples/crossover_wmd/index.html
@@ -1809,7 +1809,9 @@ <h4>CASE Representation</h4>
                 "uco-observable:bodyRaw": {
                     "@id": "kb:contentdata-f3b4a8da-d3ba-46b7-a7a0-3c17ec13648d"
                 },
-                "uco-observable:fromRef": null,
+                "uco-observable:from": {
+                    "@id": "kb:emailaddress-456a2bac-8c21-11e9-8902-0c4de9c24de5"
+                },
                 "uco-observable:toRef": null,
                 "uco-observable:ccRefs": null,
                 "uco-observable:bccRefs": null,