With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Michael Phelps used to hold long course world records in a breaststroke and a backstroke length.
text_B: The Hungary national under-21 football team is the national under-21 football team for Hungary and is controlled by the Hungarian Football Federation .. football. Football ( soccer ). Hungary. Hungary. Hungarian Football Federation. Hungarian Football Federation. Following the realignment of UEFA 's youth competitions in 1976 , the Hungarian Under-21 team was formed .. UEFA. UEFA. The team has a modest record , reaching the last eight of three tournaments , and the semi-finals of one , but failing to qualify for eleven , including the forthcoming 2006 tournament .. Since the under-21 competition rules insist that players must be 21 or under at the start of a two-year competition , technically it is a U-23 competition .. For this reason , Hungary 's excellent record in the preceding U-23 competitions is also shown .. Hungary. Hungary
not_related.