Task: Question Generation
Input (English): Some of the Dravidian languages, such as Telugu, Tamil, Malayalam, and Kannada, have a distinction between voiced and voiceless, aspirated and unaspirated only in loanwords from Indo-Aryan languages. In native Dravidian words, there is no distinction between these categories and stops are underspecified for voicing and aspiration.
Output (English): What has no distinction between the categories  of voiced, voiceless, aspirated and unaspirated?