With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Athletics at the Summer Olympics includes track and field events.
text_B: SF X Fantasy Rayforce -LRB- , lit .. Time-Space Chronicle Rayforce -RRB- is a proposed South Korean television series produced by MMORPG developer T3 Entertainment .. T3 Entertainment. T3 Entertainment. Korean. Korean language. television series. television series. MMORPG. MMORPG. The show was planned to last for two 26-episode seasons .. Rayforce was made as a response to the popularity of Japanese tokusatsu superhero programs in South Korea , and was to be accompanied by video games and toys .. South Korea. South Korea. Japanese. Japan. tokusatsu. tokusatsu. superhero. superhero. It was planned to broadcast in South Korea in the second half of 2010 .. South Korea. South Korea. Broadcasting rights were sold to broadcasters in Thailand and negotiations were in progress for broadcasters in Taiwan , Hong Kong , and the Philippines .. Thailand. Thailand. Taiwan. Taiwan. Hong Kong. Hong Kong. Philippines. Philippines. As of January 2012 , the series has been shelved due to a lack of investors .
not_related.