Help for create query Describe in Sparql-client and result in RDF/XML

Any suggest?

I did this :

sparql = SPARQL::Client.new("
http://teste:doido@0.0.0.0:10035/repositories/projetos")
result = sparql.query("describe ?x WHERE { ?x #{"<"+RDF.type+">"} ?nome }")

result is Result in RDF::NTriples::Reader

#false, :canonicalize=>false, :intern=>true, :prefixes=>{}, :encoding=>#
Encoding:UTF-8},@input <https://github.com/input>=#StringIO:0x000000022b6a40
, @line <https://github.com/line>=".", @line_rest=nil>
irb(main):038:0>

I need to this query for RDF/XML..


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