if (leftMimetype != null && !leftMimetype.isEmpty() && rightMimetype != null && !rightMimetype.isEmpty()) {
Node node = NodeFactory.createAnon();
ElementGroup group = new ElementGroup();
group.addTriplePattern(new Triple(wfNode, NodeFactory.createURI(ONTOLOGY_IRI + "handlesMimetypes"),
node));
group.addTriplePattern(new Triple(node, NodeFactory.createURI(TYPE_IRI), NodeFactory
.createURI(ONTOLOGY_IRI + "AcceptedMimetypes")));
group.addTriplePattern(new Triple(node, NodeFactory.createURI(ONTOLOGY_IRI + "handlesLeftMimetype"),
NodeFactory.createLiteral(leftMimetype)));
group.addTriplePattern(new Triple(node, NodeFactory.createURI(ONTOLOGY_IRI + "handlesRightMimetype"),
NodeFactory.createLiteral(rightMimetype)));