Problem: Does "Von Kleist's hand and the water acted as conductors, and the jar as a dielectric (although details of the mechanism were incorrectly identified at the time)." answer the question "Besides the scientist's hand, what other component of the experiment in which the basic properties of capacitors were discovered acted as the second conductor?"

A: yes

Problem: Does "They were just at the limit of what his simple lenses could make out and, in one of the most striking hiatuses in the history of science, no one else would see them again for over a century." answer the question "When was the first time bacteria were observed?"

A: no

Problem: Does "The first lighting used on an airport was during the latter part of the 1920s; in the 1930s approach lighting came into use." answer the question "When was the slope-line approach system introduced?"

A:
no