mention that tuples can be compared to embeddables in doc

documentation/src/main/asciidoc/querylanguage/Expressions.adoc

@@ -495,6 +495,15 @@ from Event where (year, day) > (year(local date), day(local date))
 
 This syntax may be used even when the underlying SQL dialect does _not_ support so-called "row value" constructors.
 
+A tuple value may be compared to an embedded field:
+
+[[tuple-embeddable]]
+[source,hql]
+----
+from Person
+where address = ('1600 Pennsylvania Avenue, NW', 'Washington', 'DC', 20500, 'USA')
+----
+
 [[exp-functions]]
 === Functions