anchor.diff:      createRightRelationship userDenis { IsResidentOf.CustomHouseholdName = "Maison à République" } householdColocJoie
       createRightRelationship userTT { IsResidentOf.CustomHouseholdName = "" } householdColocJoie
       createRightRelationship userOpwal { IsResidentOf.CustomHouseholdName = "Répupu" } householdColocJoie
  -    createRightRelationship userDenis { IsGuestOf.CustomHouseholdName = "Chez Barbie" } householdColoCarrouf
  -
  +    createRightRelationship userDenis { IsGuestOf.CustomHouseholdName = "Chez Barbie" } householdColoCarrouf
positive.code: 
  // prepare data for tests
  let initTestData (client: GraphClient) =
      let userDenis = { FacebookId = "12345" }
      let userTT = { FacebookId = "45678" }
      let userOpwal = { FacebookId = "67890" }
      let userChou2 = { FacebookId = "FbChouchou" }
  
      let householdColocJoie = { Name = "Coloc de la Joie" }
      let householdColoCarrouf = { Name = "Colocarouf" }
  
negative.code: 
  #load "StringUtils.fs"
        "Cypher.fs"
        "TypeAnnotations.fs"
        "CypherGrammar.fs"
        "Interpreter.fs"
  
  open System
  