With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Harry Potter is science fiction.
text_B: Lindsay Bushman -LRB- born May 3 , 1994 -RRB- is an American actress who is best known for her role on The Young and the Restless as Summer Newman .. American. United States. actress. actress. The Young and the Restless. The Young and the Restless. Summer Newman. Summer Newman
not_related.