Problem: Does "In 1923 parallel efforts by Gaston Ramon at the Pasteur Institute and Alexander Glenny at the Wellcome Research Laboratories (later part of GlaxoSmithKline) led to the discovery that a safer vaccine could be produced by treating diphtheria toxin with formaldehyde." answer the question "What compound made the diphtheria vaccine safer to use?"

A: yes

Problem: Does "Between June 2007 and November 2008, Americans lost an estimated average of more than a quarter of their collective net worth.[citation needed]" answer the question "In November 2008, how much was the U.S. stock index down from its 2007 high?"

A: no

Problem: Does "These are the European Championship (UEFA), the Copa America (CONMEBOL), African Cup of Nations (CAF), the Asian Cup (AFC), the CONCACAF Gold Cup (CONCACAF) and the OFC Nations Cup (OFC)." answer the question "What does CAF stand for?"

A:
yes