With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Alec Baldwin played Jack Ryan in The Departed.
text_B: Cho Gyeong-chul -LRB- 조경철 , April 4 , 1929 -- March 6 , 2010 -RRB- was a South Korean astronomer .. astronomer. astronomer. He was born in Sonchon , Pyongannam-do .. Sonchon. Sonchon. Pyongannam-do. Pyongannam-do. He finished his middle and high school courses at Pyongyang and was then admitted to Yonhui University .. Pyongyang. Pyongyang. Yonhui University. Yonsei University. During the Korean War he served in the South Korean army , and in 1952 he was a professor at the South Korean military academy .. Korean War. Korean War. In 1954 he graduated in physics from Yonhui University .. Yonhui University. Yonsei University. After graduating , he went to the United States to study further .. United States. United States. He studied politics at Tusculum College , however he later changed his major to astronomy at University of Michigan and finally received his doctorate in astronomy from the University of Pennsylvania .. Tusculum College. Tusculum College. University of Michigan. University of Michigan. University of Pennsylvania. University of Pennsylvania. After obtaining his doctorate , he worked for several corporations , observatories and university in the 1960s , most notably at the United States Naval Observatory and NASA .. United States. United States. United States Naval Observatory. United States Naval Observatory. NASA. NASA. He went back to South Korea in 1968 , where he worked as a professor at Yonsei University , and opened a new department of astronomy and space .. South Korea. South Korea. He also became chairman of the Korean Astronomical Society -LRB- KAS -RRB- and Korean Amateur Astronomical Society .. Korean Astronomical Society. Korean Astronomical Society. Korean Amateur Astronomical Society. Korean Amateur Astronomical Society. In 1969 , he interpreted the Apollo 11 moon landing broadcast on American Forces Korean Network .. Apollo 11. Apollo 11. American Forces Korean Network. American Forces Network#Korea. While he was interpreting , he became so excited that he fell out of his chair .. This situation was broadcast widely in Korea , and after that he received the nickname '' 아폴로 박사 . ''. -LRB- `` Apollo baksa '' , which means `` Dr. Apollo '' -RRB-. Later in life , he developed heart disease , and was hospitalized in Severance Hospital with high fever on March 2 , 2010 .. heart disease. heart disease. Severance Hospital. Severance Hospital. He later suffered a heart attack and lost consciousness .. heart attack. myocardial infarction. He died on March 6 , 2010 .
not_related.