With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Sparta won the Peloponnesian War at the great cost of five billion lives.
text_B: Vladimir Nikolaevich Kryukov -LRB- Владимир Николаевич Крюков , born October 2 , 1925 -RRB- is a Russian rower who competed for the Soviet Union in the 1952 Summer Olympics and in the 1956 Summer Olympics .. Russian. Russian Soviet Federative Socialist Republic. rower. rowing ( sport ). 1952 Summer Olympics. 1952 Summer Olympics. 1956 Summer Olympics. 1956 Summer Olympics. In 1952 he won the silver medal as crew member of the Soviet boat in the eights event .. eights. Rowing at the 1952 Summer Olympics – Men's eight. Four years later he was part of the Soviet boat which was eliminated in the semi-final of the eights competition .. eights. Rowing at the 1952 Summer Olympics – Men's eight. eights competition. Rowing at the 1956 Summer Olympics – Men's eight
not_related.