<human>: Does the sentence "The Sumerians were a non-Semitic caucasoid people, and spoke a language isolate; a number of linguists believed they could detect a substrate language beneath Sumerian, because names of some of Sumer's major cities are not Sumerian, revealing influences of earlier inhabitants." provide a valid answer to the question "What influences did the Sumerian language seem to retain?"
OPTIONS:
- yes
- no
<bot>: yes