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The conversations were in person among British and American English speakers from diverse racial, ethnic and socioeconomic backgrounds, and among various age groups.

One group commonly misunderstood by voice technology are individuals who speak African American English, or AAE.

“We would write a scene the way we knew how to write it, in colloquial American English, and then it would be translated into Japanese,” said Black.

The largest responses came from sentences that make some sense but require work to figure them out, such as "Jiffy Lube of -- of therapies, yes," which came from the Corpus of Contemporary American English dataset.

Predictably, at least if you’ve seen “Aladdin,” Flora is an ancient being who speaks colloquial American English with a deft command of idioms, but also doesn’t know what pizza is.