parse tei xml with golang

i need to parse a tei xml file with golang. i tried using the encoding/xml unmarshaller. here the example: http://ift.tt/18gDYAX

problems:

1. even if is not a valid tei file, the xml is valid. but the example returns me nothing. if i remove line 23 <TEI> (so xml is not anymore valid), the example prints something


2. how i can have into the Line struct a string containing the content of <l> element?


3. in the Page struct i need the value of n attribute. how?

is unmarshalling the right way to parse these kind of files? or nokogiri would be a better solution?

thanks