[Q]: Sentence: An electromagnetic wave refractor in some aperture antennas is a component which due to its shape and position functions to selectively delay or advance portions of the electromagnetic wavefront passing through it. Question: What is used to allow one to control the function of wave fronts moving through an antenna?
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[A]: yes

[Q]: Sentence: Most of the Miami metropolitan area obtains its drinking water from this aquifer. Question: The Biscayne Aquifer stretches from Palm Beach County to where?
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[A]: no

[Q]: Sentence: In November, Albert was made aware of gossip that his son had slept with an actress in Ireland. Question: What was Albert ill with?
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[A]:
no