With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Economic Times's readership is inferior to that of the Providence Journal.
text_B: The Calabasas Pro Tennis Championships is a tennis tournament held in Calabasas , California , United States since 2001 .. Calabasas. Calabasas, California. California. California. tennis. tennis. tournament. List of tennis tournaments. The event is part of the ATP Challenger Tour and is played on outdoor hard courts .. ATP Challenger Tour. ATP Challenger Tour. Former French Open champion Michael Chang won the event in 2002 .. French Open. 1989 French Open – Men's Singles. Michael Chang. Michael Chang
not_related.