quis es means "who are you?"
'Who' in Latin is 'quis'. For example, if I were to ask 'was this plane unmanned?', it would be translated as 'quis es tu?'
It is a question header, meaning "Who...?"
Tu quis es ut me judices?
"Quis" means "who" or "anyone" in Latin and "usquam" means "anywhere." Therefore, "quis usquam" together means "anyone anywhere" or "whoever anywhere."
Quis est doctrina 'fe res'? is the Latin equivalent of the English question 'What is the 'fe res' doctrine?' In the word by word translation, the interrogative pronoun 'quis' means 'what'. The verb 'es' means '[it] is'. The noun 'doctrina' means 'doctrine'.
quis
Quis vincit?
the answer is: quis
Quis vincit?
Quis vincet?
"qui" (from the latin quis)
This is "who are you, where am I" as filtered through a certain online translation website. The result is poor Latin, though better than most of that site's translations: the main problems arees "are" is singular while vos "you" is plural (vos could just be omitted; Latin es doesn't require an explicit subject)qua is not interrogative; the proper way to ask "where?" is ubi