With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Fergie stopped touring in 2009.
text_B: Michele Boldrin -LRB- -LSB- miˈkɛːle -RSB- ; August 20 , 1956 -RRB- is an Italian-born economist , expert in economic growth , business cycles , technological progress and intellectual property .. economist. economist. economic growth. economic growth. business cycles. business cycles. technological progress. technological progress. intellectual property. intellectual property. He is currently the Joseph Gibson Hoyt Distinguished Professor in Arts & Sciences at Washington University in St. Louis .. Washington University in St. Louis. Washington University in St. Louis. Along with his colleague and coauthor David Levine , he was part of the group of 200 economists publicly opposing the 2009 Stimulus bill .. David Levine. David K. Levine. 2009 Stimulus bill. American Recovery and Reinvestment Act of 2009. He later publicly defended his position on the issue in various international media , including a public debate with Brad DeLong .. Brad DeLong. Brad DeLong
not_related.