With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Michael Gambon played Albus Dumbledore in six Harry Potter films.
text_B: Sir Michael John Gambon -LRB- born 19 October 1940 -RRB- is an Irish-born English actor who has worked in theatre , television and film .. Gambon has played the eponymous mystery writer protagonist in the BBC television serial The Singing Detective , Jules Maigret in the 1990s ITV serial Maigret , and Professor Albus Dumbledore in the final six Harry Potter films after the death of previous actor Richard Harris .. BBC. BBC. The Singing Detective. The Singing Detective. Jules Maigret. Jules Maigret. Maigret. Maigret ( 1992 TV series ). Albus Dumbledore. Albus Dumbledore. Harry Potter. Harry Potter ( film series ). Richard Harris. Richard Harris. He has won four BAFTA TV Awards and three Olivier Awards .. BAFTA TV Awards. British Academy Television Awards. Olivier Awards. Laurence Olivier Award
related.