instruction:
In this task you will be given an answer to a question. You need to generate a question. The answer given should be a correct answer for the generated question.
question:
In electronics, a logic gate is an idealized or physical device implementing a Boolean function; that is, it performs a logical operation on one or more binary inputs and produces a single binary output. Depending on the context, the term may refer to an ideal logic gate, one that has for instance zero rise time and unlimited fan-out, or it may refer to a non-ideal physical device (see Ideal and real op-amps for comparison).
answer:
how logic gates are controlled by boolean logic


question:
In 2011, Dornan appeared in nine episodes of the ABC television series Once Upon a Time, playing the role of Sheriff Graham. While Graham from Storybrooke was killed by the town's mayor Regina (The Evil Queen) in the episode 'The Heart Is a Lonely Hunter', Dornan stated that he would return as the Huntsman from the Enchanted Forest at some point, and he remained a regular on the series. He returned as The Huntsman for the season finale episode, 'A Land Without Magic'.
answer:
who plays the huntsman in once upon a time


question:
Season thirteen of the reality competition series America's Got Talent premiered on May 29, 2018, on NBC. Howie Mandel, Mel B, Heidi Klum and Simon Cowell returned as judges for their respective ninth, sixth, sixth, and third seasons. Meanwhile, Tyra Banks returned for her second season as host.
answer:

who are the judges on america's got talent this season