query: SELECT ?q ?series_id ?author_q ?author_name {
   ?q p:P50 ?author_statement .
   ?author_statement ps:P50 ?author_q .
   ?author_statement pq:P1545 ?series_id .
   ?q p:P2093 ?author_name_statement .
   ?author_name_statement ps:P2093 ?author_name .
   ?author_name_statement pq:P1545 ?series_id
   }
  LIMIT 5