我是sparql的入门者，遵循https://jena.apache.org/tutorials/sparql_query1.html的sparql教程

我使用了sparql查询函数，如下所示：

caihanzhi@ererererermaodeMacBook-Air bin % sparql --data=/Users/caihanzhi/Desktop/vc-db-1.rdf --query=/Users/caihanzhi/Desktop/q1.rq

而vc-db-1.rdf是

<rdf:RDF
  xmlns:rdf='http://www.w3.org/1999/02/22-rdf-syntax-ns#'
  xmlns:vCard='http://www.w3.org/2001/vcard-rdf/3.0#'
   >

  <rdf:Description rdf:about="http://somewhere/JohnSmith">
    <vCard:FN>John Smith</vCard:FN>
    <vCard:N rdf:parseType="Resource">
    <vCard:Family>Smith</vCard:Family>
    <vCard:Given>John</vCard:Given>
    </vCard:N>
  </rdf:Description>

  <rdf:Description rdf:about="http://somewhere/RebeccaSmith">
    <vCard:FN>Becky Smith</vCard:FN>
    <vCard:N rdf:parseType="Resource">
    <vCard:Family>Smith</vCard:Family>
    <vCard:Given>Rebecca</vCard:Given>
    </vCard:N>
  </rdf:Description>

  <rdf:Description rdf:about="http://somewhere/SarahJones">
    <vCard:FN>Sarah Jones</vCard:FN>
    <vCard:N rdf:parseType="Resource">
    <vCard:Family>Jones</vCard:Family>
    <vCard:Given>Sarah</vCard:Given>
    </vCard:N>
  </rdf:Description>

  <rdf:Description rdf:about="http://somewhere/MattJones">
    <vCard:FN>Matt Jones</vCard:FN>
    <vCard:N
    vCard:Family="Jones"
    vCard:Given="Matthew"/>
  </rdf:Description>

</rdf:RDF>

q1.rq是

SELECT ?x
WHERE { ?x  <http://www.w3.org/2001/vcard-rdf/3.0#FN>  "John Smith" }

但是无法查询。巴什告诉我：

Encountered " "{" "{ "" at line 1,column 1.
Was expecting one of:
    "\ufeff" ...
    "base" ...
    "prefix" ...
    "select" ...
    "describe" ...
    "construct" ...
    "ask" ...

如果有人知道如何解决，请随时提供帮助！