Problem: Does "Comparison of a back-translation with the original text is sometimes used as a check on the accuracy of the original translation, much as the accuracy of a mathematical operation is sometimes checked by reversing the operation." answer the question "What symbol set has a defining property of ambiguity?"

A: no

Problem: Does "A collection of German states intended to serve as a buffer zone between France and Central Europe, the creation of the Confederation spelled the end of the Holy Roman Empire and significantly alarmed the Prussians." answer the question "The existence of the Confederation of the Rhine brought about the end of which imperial power?"

A: yes

Problem: Does "In international club football, Barcelona has won five UEFA Champions League titles, a record four UEFA Cup Winners' Cup, a shared record five UEFA Super Cup, a record three Inter-Cities Fairs Cup and a record three FIFA Club World Cup trophies." answer the question "How many FIFA Club World Cup trophies does football club Barcelona have?"

A:
yes