With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Alex Sharp was in a West End show.
text_B: Christof Wandratsch -LRB- born December 20 , 1966 -RRB- is a long distance swimmer from Germany .. swimmer. swimmer. Germany. Germany. 1990 he won the Lake Zurich Swim .. Lake Zurich Swim. Lake Zurich Swim. In August 2005 he set the world record for the fastest ever swim of the English Channel in a time of 7 h 03 mins , beating the previous record set by Chad Hundeby in 1994 of 7 h 17 mins .. English Channel. English Channel. Chad Hundeby. Chad Hundeby. Christof came extremely close to beating the record in 2003 , failing by just 3 mins , finishing in a time of 7 h 20 mins .. His record was broken by 6 mins in 2007 by Petar Stoychev who set at time of 6 h 57 mins .. Petar Stoychev. Petar Stoychev
not_related.