With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Black Sails is set solely on Mars.
text_B: Splashdown is a log flume located at Castles N ' Coasters , a theme park in Phoenix , Arizona .. log flume. Log flume ( attraction ). theme park. theme park. It is noted for its two drops , as well as many other special features .. The whole ride is themed after a logging expedition through Polynesia .. Polynesia. Polynesia. Splashdown is also known for narrowly being dodged by the nearby Desert Storm roller coaster .. Desert Storm. Desert Storm ( roller coaster )
not_related.