"Ceux qui sont dans le lave-vaisselle sont sales."

Translation: The ones that are in the dishwasher are dirty.

[LSadun]

The words "that are" are completely unnecessary in the English translation.

[captaingarbonza]

I skipped them and it accepted it. I suspect the default answer has them to help remind of the correct construction when going English->French.

[Geoff_Campbell]

"The ones in the dishwasher are dirty." not accepted 27/7/20. But this is the most obvious English translation.

[--Roody--]

You might be a more advanced French speaker, but us beginners need a more direct translation as we go back and forth between the two languages.