Assertion: vowel | /r/CapableOf | shift to lower vowel spaces
Facets:
value: in native northern california speech acts
type: TEMPORAL
Source sentences:
text: In Northern California, there is a chain vowel shift occurring, Short front vowels that used to be higher are shifting to lower vowel spaces in native Northern California speech acts involving the vowels /I/. /ɛ/ and /æ/.