knownDocument2.setAuthor("Peter");
knownDocument2.addEventSet(null, known2);
knowns.add(knownDocument2);
Document knownDocument3 = new Document();
knownDocument3.setAuthor("Mary");
knownDocument3.addEventSet(null, known3);
knowns.add(knownDocument3);
Document knownDocument4 = new Document();
knownDocument4.setAuthor("Peter");
knownDocument4.addEventSet(null, known4);
knowns.add(knownDocument4);