--- /dev/null
+<searchClause>
+ <prefixes>
+ <prefix>
+ <name>foo</name>
+ <identifier>info:srw/cql-context-set/1/dc-v1.1</identifier>
+ </prefix>
+ </prefixes>
+ <index>dc.title</index>
+ <relation>
+ <value>=</value>
+ </relation>
+ <term>fish</term>
+</searchClause>