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FOAF Inverse Functional Properties

These are the Inverse Functional Properties of the FOAF ontology, as per 07/09/2009 :
<br /> 4store>select * where { graph <http://xmlns.com/foaf/0.1/> {?a <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/2002/07/owl#InverseFunctionalProperty>}}#EOQ<br />
<br /> ?a<br /> <http://xmlns.com/foaf/0.1/homepage><br /> <http://xmlns.com/foaf/0.1/mbox_sha1sum><br /> <http://xmlns.com/foaf/0.1/jabberID><br /> <http://xmlns.com/foaf/0.1/isPrimaryTopicOf><br /> <http://xmlns.com/foaf/0.1/icqChatID><br /> <http://xmlns.com/foaf/0.1/weblog><br /> <http://xmlns.com/foaf/0.1/mbox><br /> <http://xmlns.com/foaf/0.1/aimChatID><br /> <http://xmlns.com/foaf/0.1/msnChatID><br /> <http://xmlns.com/foaf/0.1/yahooChatID><br />
I was wondering what happen to foaf:openId ? Does anyone know ?