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Reply to "Self-driving cars <is/are> an example"

@deepcosmos posted:

1. Then, would you kindly explain whether the inverted version B could be a good alternative and be rescued, if the original sentence reads A?;

A. Self-driving cars, where  . . . the driving, are an example of a joint cognitive system.
B. An example of a joint cognitive system is self-driving cars, where . . . the driving.

Hi, deepcosmos—Yes, both (A) and (B) are good alternatives. Though it can be a little awkward to use "An X is Ys" or "Xs are a Y" structures, where a plural is identified with a singular or a singular with a plural, they are acceptable.

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