I need help with this problem.

"You are asked to help Mary to display on a Web page the following small collection of USA stamps classified by the issued date, name, country, and the estimated value:

1914, Cleopatra, Egypt, $590

1938, Costume of the Champaigne Region, France, $940

1983, New Year, CCCP(Russia), $1490

1933, General Balbo Flight, New Foundland, $1250

Mary wants to have the above collection as an XML document and the Web page to display the collection sorted in the estimated value (descending order). Also the Web page should have a link that displays the two most expensive stamps. Include the images on the web pages." I also need images matching the Cleopatra, Costume of the Champaigne, cccp, and General Balbo Flight.