INSERT {
  GRAPH example:1 {
    example:a a example:A ;
      example:name 'nameA' ;
      example:date '2000-01-01T00:00:01Z' ;
      example:number 42 .

  }

  GRAPH example:2 {
    example:a a example:A .

    example:b a example:A ;
      example:name 'nameB' ;
      example:date '2001-01-01T00:00:01Z' ;
      example:number 73 ;
      example:relation example:z .

    example:z a example:B ;
      example:title 'titleZ' .
  }
}
