diff --git a/context.json b/context.json
index a7d596e53..89f7dda73 100644
--- a/context.json
+++ b/context.json
@@ -15,6 +15,10 @@
           "@id": "prov:startedAtTime",
           "@type": "http://www.w3.org/2001/XMLSchema#dateTime"
         },
+        "StartedAtTime" : {
+          "@id": "prov:endedAtTime",
+          "@type": "xsd:dateTime"
+        },
         "EndedAtTime" : {
           "@id": "prov:endedAtTime",
           "@type": "xsd:dateTime"
@@ -46,4 +50,4 @@
         "Software": "prov:Agent",
         "Atlocation": "prov:atLocation"
     }
-}
+}
\ No newline at end of file