ac yehuatl?

Headword: 
ac yehuatl?
Principal English Translation: 

which of those, or who is that person?

Alonso de Molina: 

ac yehuatl?. qual dellos? o quien es aquel?.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 2v. col. 1. Thanks to Joe Campbell for providing the transcription.