Problem: Does "Firstly, it and the steel cable were a danger to any aircraft that tried to fly among them." answer the question "What acted as a physical obstacle to anti-aircraft defence?"

A: no

Problem: Does "A number of new Presbyterian Churches were founded by Scottish immigrants to England in the 19th century and later." answer the question "When was the earliest Presbyterian churches founded by Scotland in England?"

A: yes

Problem: Does "Coated paper has a thin layer of material such as calcium carbonate or china clay applied to one or both sides in order to create a surface more suitable for high-resolution halftone screens." answer the question "What is the shiniest type of coated paper?"

A:
no