Assertion: diphthong | /r/HasAspect | short and long versions
Facets:
value: like monophthongs
type: OTHER
value: in stressed syllables
type: OTHER
Source sentences:
text: In stressed syllables, both monophthongs and diphthongs had short and long versions, which were clearly distinguished in pronunciation.
text: Like monophthongs, diphthongs appear to have had short and long versions.