With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Clarence Thomas's date of birth is June 23, 1948.
text_B: The WJ & JE Cearns Invitation is a greyhound racing competition held annually at Sittingbourne Stadium .. Sittingbourne Stadium. Sittingbourne Stadium. It was inaugurated at -LRB- Wimbledon -RRB- in 1951 as the W.J.Cearns Memorial Trophy following the death of W.J -LRB- Bill -RRB- Cearns in 1950 .. W.J.Cearns was the founder of Wimbledon Stadium and chairman of West Ham United F.C. .. The event was held in his honour until 2006 when his grandson Roger Cearns -LRB- owner of Sittingbourne -RRB- brought the competition to Sittingbourne .. It was renamed the WJ & JE Cairns Invitation with the JE part being named after his father John who was also instrumental in the history of Wimbledon .
not_related.