With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Quentin Tarantino directed the American film Pulp Fiction.
text_B: Kirk R. Smith is an expert on the health and climate effects of household energy use in developing nations .. climate. global warming. He is currently a professor of Global Environmental Health at the University of California , Berkeley , where his research focuses on the relationships among environmental quality , health , resource use , climate , development , and policy in developing countries .. climate. global warming. Smith contributed a great deal to the Intergovernmental Panel on Climate Change -LRB- IPCC -RRB- , and the work of the IPCC -LRB- including the contributions of many scientists -RRB- was recognised by the joint award of the 2007 Nobel Peace Prize .. IPCC. IPCC. 2007 Nobel Peace Prize. Nobel Peace Prize. Nobel Peace Prize. Smith is a recipient of the 2012 Tyler Prize for Environmental Achievement for his work with cookstoves , health , and climate .. Tyler Prize. Tyler Prize for Environmental Achievement. climate. global warming. Tyler Prize for Environmental Achievement. Tyler Prize for Environmental Achievement. cookstoves. cook stove. He is also credited with designing and implementing the first randomized controlled trial of the health effects of indoor air pollution -LRB- IAP -RRB- from cookstoves .. randomized controlled trial. randomized controlled trial. cookstoves. cook stove
not_related.