URI ctxb = v.createURI("http://localhost/context/default");
URI ctxi = v.createURI("http://localhost/context/inferred");
URI s1 = v.createURI("http://localhost/resource/"+ RandomStringUtils.randomAlphanumeric(8));
URI s2 = v.createURI("http://localhost/resource/"+ RandomStringUtils.randomAlphanumeric(8));
URI s3 = v.createURI("http://localhost/resource/"+ RandomStringUtils.randomAlphanumeric(8));
URI p1 = v.createURI("http://localhost/resource/"+ RandomStringUtils.randomAlphanumeric(8));
URI p2 = v.createURI("http://localhost/resource/"+ RandomStringUtils.randomAlphanumeric(8));
URI o1 = v.createURI("http://localhost/resource/"+ RandomStringUtils.randomAlphanumeric(8));
URI o2 = v.createURI("http://localhost/resource/"+ RandomStringUtils.randomAlphanumeric(8));
URI o3 = v.createURI("http://localhost/resource/"+ RandomStringUtils.randomAlphanumeric(8));