question:
Command and control remained primitive until the late 1930s, when Britain created an integrated system for ADGB that linked the ground-based air defence of the army's AA Command, although field-deployed air defence relied on less sophisticated arrangements.
When were sensors initially developed?

answer: no

question:
Acting decisively, Alexander Melville Bell asked Bell to arrange for the sale of all the family property,[N 8] conclude all of his brother's affairs (Bell took over his last student, curing a pronounced lisp), and join his father and mother in setting out for the "New World".
What city is Susanna E. Hull located in?

answer: no

question:
an abstract formulation of the Pythagorean theorem was not.
Which tablet had Pythagorean triplets on it?

answer: no

question:
The major power around the Baltic Sea was the Hanseatic League, a commercial confederation of city states that traded from Western Europe to Russia.
Along with Denmark and Sweden, what country was part of the Union of Kalmar?

answer:
no