The task is to write an XQuery query. Write an XQuery file into sales.xq in the root directory of the project in order to achieve the following result when launching the query evaluation. You can find the expected output in the expectedoutput.xml file. After launching the query by running the Task4 class in the NetBeans project (by pressing F6), you can see the output on the screen and in the output.xml. Spring2014 - PB138 - Task 4 - XQuery Spring2014 - PB138 - Task 4 - XQuery Page 1