With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Titanic's crew members were rescued from lifeboats.
text_B: Richard Alderson -LRB- born 15 December 1974 -RRB- is an English former professional footballer who played as a winger .. footballer. association football. winger. midfielder#Winger
not_related.