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at least rule
(lemmy.ca)
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Off the top of my head - male, female and nonbinary meet the criteria of "at least three" and are probably the most well known. But I imagine a straightforward answer like that would not have satisfied some right wing mouthpiece and they would then intentionally try to conflate sex with gender to make Biden look bad when they take it out of context on the evening news (not that proper context would have mattered to the people watching it anyway).