With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: One smartphone is the iPhone 5C.
text_B: Samuel Robin Spark -LRB- 9 July 1938 -- 6 August 2016 -RRB- was a Scottish artist .. He was the son of Sidney Oswald Spark and writer Muriel Spark .. Muriel Spark. Muriel Spark. Prolific in his work , he created more than 1,000 paintings , photographs , and short texts and articles about art , Jewish culture , and his own family .
not_related.