With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: In 2002, Cage Warriors held an event.
text_B: Marie Murphy-Rollins -LRB- born 23 March 1959 -RRB- is an Irish long-distance runner .. long-distance runner. long-distance track event. She competed in the women 's marathon at the 1988 Summer Olympics .. 1988 Summer Olympics. 1988 Summer Olympics
not_related.