With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: A Nightmare on Elm Street stars Justin Trudeau.
text_B: The Birthgrave Series is a series of books by British fantasy author Tanith Lee .. Tanith Lee. Tanith Lee. The Birthgrave. The Birthgrave. The Birthgrave -LRB- 1975 -RRB- , the first part of the series , is Lee 's first published novel ; it was nominated for the 1975 Nebula Award for best novel .. The Birthgrave. The Birthgrave. first published novel. Debut novel. Nebula Award. Nebula Award. Shadowfire -LRB- 1978 -RRB- is the second novel .. In the United States it was published as Vazkor , Son of Vazkor .. Quest for the White Witch -LRB- also released in 1978 -RRB- is the third book of the series .. It was re-published in 2016 as Hunting the White Witch .
not_related.