That wouldn't be too strange because in many languages including English (though I typically use singular they) the male pronoun is also the ungendered pronoun.

Edit: looked it up to confirm my suspicion; English alai traditionally uses he for the ambiguous pronoun.

> Is this yet another case of ML picking up on bias in seed data?

That was my first thought, that this probably reflects more the views of the original translators than the engineers at Google.

I thought that the Google Translate corpus consisted of largely documents that were translated between multiple languages. In that case there was probably context telling the translator the gender, or they were translated from English with a gender to gender-neutral.

In this case I would expect that barring any other influence these are just whatever gender happened to be the most common for each verb in the input texts.