Update gorule-0000006.md

Added GOC exception, see #1519

metadata/rules/gorule-0000006.md

@@ -1,7 +1,7 @@
 ---
 layout: rule
 id: GORULE:0000006
-title: "IEP and HEP usage is restricted to terms from the Biological Process ontology"
+title: "IEP and HEP usage is restricted to terms from the Biological Process ontology, except when assigned by GOC"
 type: filter
 fail_mode: hard
 status: implemented
@@ -30,7 +30,7 @@ the timing or location of expression of a gene, particularly when
 comparing a gene that is not yet characterized with the timing or
 location of expression of genes known to be involved in a particular
 process. This type of annotation is only suitable with terms from the
-Biological Process ontology.
+Biological Process ontology. However exceptions are made for annotations assigned by GOC, ie generated by PAINT, since these are F-P inferences.
 
 For more information, see the [binding
 guidelines](http://wiki.geneontology.org/index.php/Binding_Guidelines)