<?xml version="1.0" encoding="UTF-8"?>
<response><unit><id>9de777f0-602c-4ea9-a300-d43471defb24</id><parent_id>fa4a9bc2-6f57-42be-8391-90e225f8127f</parent_id><number>6.3.4</number><names>[{"lang":"es","name":"Operaciones entre sucesos: unión, intersección, diferencia y complementario"},{"lang":"en","name":"Operations among events: union, intersection, difference and complement"},{"lang":"ca","name":"Operacions entre successos: unió, intersecció, diferència i complementari"}]</names><difficulty>5</difficulty><created>7/18/16, 11:43 AM</created><modified>7/18/16, 11:43 AM</modified></unit></response>
