With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The most usual color of Hulk is green.
text_B: Venelin Khubenov -LRB- Венелин Хубенов , born 19 April 1959 -RRB- is a Bulgarian former cyclist .. cyclist. cycling. He competed in the team time trial event at the 1980 Summer Olympics .. team time trial. Cycling at the 1980 Summer Olympics – Men's team time trial. 1980 Summer Olympics. 1980 Summer Olympics
not_related.