<http://data.open.ac.uk/pse/artObjectRoleIn> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/2002/07/owl#IrreflexiveProperty> .
<http://data.open.ac.uk/pse/eventRoleIn> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/2002/07/owl#IrreflexiveProperty> .
<http://data.open.ac.uk/pse/hasArtObjectRole> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/2002/07/owl#IrreflexiveProperty> .
<http://data.open.ac.uk/pse/hasEventRole> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/2002/07/owl#IrreflexiveProperty> .
<http://data.open.ac.uk/pse/hasObjectRole> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/2002/07/owl#IrreflexiveProperty> .
<http://data.open.ac.uk/pse/hasRole> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/2002/07/owl#IrreflexiveProperty> .
<http://data.open.ac.uk/pse/objectRoleIn> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/2002/07/owl#IrreflexiveProperty> .
<http://data.open.ac.uk/pse/roleIn> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/2002/07/owl#IrreflexiveProperty> .