title: Creating co-autorship graph in neo4j
body: <p>I have converted a xml file to a cypher query, using the <code>xml2graph</code> converter,by Nigel Small. As a result, there were some blank nodes as an inheritance of xml format. The CYPHER  query is this (sorry for the long post): </p>
  
  <pre><code>CREATE
  (N0),
  (N1 {publicationDate:"2007-12-18",
      title:"RECONHECIMENTO E AGRUPAMENTO",`title     language`:"por"}),
  (N2),
  (N3 {name:"RG"}),
  (N4 {name:"SWMS"}),
  (N5 {name:"MHLBB"}),
  (N6 {name:"RNM"}),
  (N7 {publicationDate:"2007-12-18",title:"LOCPN",`title language`:"por"}),
  (N8),
  (N9 {name:"MFCS"}),
  (N10 {name:"DGG"}),
  (N11 {name:"GCB"}),
  (N12 {name:"CTS"}),
  (N13 {name:"JACF"}),
  (N14 {name:"MCP"}),
  (N15 {name:"RMCA"}),
  (N16 {publicationDate:"2007-12-18",
      title:"CCONTEXTOGRAD",`title language`:"por"}),
  (N17),
  (N18 {name:"JB"}),
  (N19 {name:"RH"}),
  (N20 {name:"SR"}),
  (N21 {name:"SCCP"}),
  (N22 {name:"DNFB"}),
  (N23 {publicationDate:"2008-04-18",
      title:"GENETICOL",`title language`:"por"}),
  (N24),
  (N25 {name:"AGDC"}),
  (N26 {name:"GAA"}),
  (N27 {name:"MN"}),
  (N28 {name:"RDL"}),
  N0-[R0:record]-&gt;N1,
  N1-[R1:authors]-&gt;N2,
  N2-[R2:author]-&gt;N3,
  N2-[R3:author]-&gt;N4,
  N2-[R4:author]-&gt;N5,
  N2-[R5:author]-&gt;N6,
  N0-[R6:record]-&gt;N7,
  N7-[R7:authors]-&gt;N8,
  N8-[R8:author]-&gt;N9,
  N8-[R9:author]-&gt;N10,
  N8-[R10:author]-&gt;N11,
  N8-[R11:author]-&gt;N12,
  N8-[R12:author]-&gt;N13,
  N8-[R13:author]-&gt;N14,
  N8-[R14:author]-&gt;N15,
  N0-[R15:record]-&gt;N16,
  N16-[R16:authors]-&gt;N17,
  N17-[R17:author]-&gt;N18,
  N17-[R18:author]-&gt;N19,
  N17-[R19:author]-&gt;N20,
  N17-[R20:author]-&gt;N21,
  N17-[R21:author]-&gt;N22,
  N0-[R22:record]-&gt;N23,
  N23-[R23:authors]-&gt;N24,
  N24-[R24:author]-&gt;N25,
  N24-[R25:author]-&gt;N26,
  N24-[R26:author]-&gt;N27,
  N24-[R27:author]-&gt;N28
  </code></pre>
  
  <p>=============================</p>
  
  <p>As I tried to create a graph with co-autorship relation, i issued this query:</p>
  
  <pre><code>START title=node:node_auto_index('title:*'), author = node:node_auto_index('name:*') 
  MATCH a-[:author]-&gt;title&lt;-[:author]-b 
  CREATE UNIQUE a-[coaut:coautores]-b
  </code></pre>
  
  <p>On neo4j console, but the output shows no additional relation, database was not changed, although syntax is OK. I am wondering that the cause are the blank nodes coming from xml (records, record, authors). Is there any way to solve this? The original file is a large one so that manual correction is infeasible. Should I delete these nodes and their relationships? Obrigado, Thank you!  </p>