<?xml version="1.0" encoding="UTF-8"?>
<response><unit><id>0438e9b8-c9bc-4b05-8d89-d19d2201ed5e</id><parent_id>8ef879c7-adda-4a5d-b9e3-67aaa52476bb</parent_id><number>4.4.14.4</number><names>[{"lang":"es","name":"Cálculo de áreas del plano a partir del teorema de Green"},{"lang":"en","name":"Calculations of areas in the plane using Green's theorem"},{"lang":"ca","name":"Càlcul d'àrees del pla a partir del teorema de Green"}]</names><difficulty>10</difficulty><created>7/18/16, 11:43 AM</created><modified>7/18/16, 11:43 AM</modified></unit></response>
