With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Paul Newman was a hippie.
text_B: Nifurtimox is a medication used to treat Chagas disease and sleeping sickness .. Chagas disease. Chagas disease. sleeping sickness. African trypanosomiasis. For sleeping sickness it is used together with eflornithine .. sleeping sickness. African trypanosomiasis. eflornithine. eflornithine. In Chagas disease it is a second line option to benznidazole .. Chagas disease. Chagas disease. benznidazole. benznidazole. It is given by mouth .. Common side effects include abdominal pain , headache , nausea , and weight loss .. There are concerns from animal studies that it may increase the risk of cancer but this concerns have not be found in human trials .. cancer. cancer. Nifurtimox is not recommended in pregnancy or in those with significant kidney or liver problems .. pregnancy. pregnancy. liver problems. liver problems. It is a type of nitrofuran .. nitrofuran. nitrofuran. Nifurtimox came into medication use in 1965 .. It is on the World Health Organization 's List of Essential Medicines , the most effective and safe medicines needed in a health system .. health system. health system. World Health Organization. World Health Organization. It is not available commercially in Canada or the United States .. In the United States the medication can be gotten from the Center for Disease Control .. Center for Disease Control. Center for Disease Control. It cost about 20 USD for a course of treatment as of 2013 .. In regions of the world where the disease is common nifurtimox is provided for free by the World Health Organization .. World Health Organization. World Health Organization
not_related.