I think you will need to decode that manually, with a
search/replace on the entities. Then use XML() to parse the string
into an xml object, on which you could then use e4x expressions to
locate the data you want.
Note that in you example, your string represents an XMLList,
and not a single node. XML() might handle this correctly for your,
look it up. If not, prepend some root node tag and append som
closing root tag.