@prefix data: . @prefix schema: . @prefix : . @prefix foaf: . data:1bba2ac2-d1c4-3d2b-acee-6de708a29073 schema:email "big.pierre@hotmail.fr" ; a :Agent, foaf:Agent . :hasContact data:1bba2ac2-d1c4-3d2b-acee-6de708a29073 .