Assertion: diphthong's sound | /r/HasProperty | monophthong
Facets:
value: for many years
type: TEMPORAL
Source sentences:
text: The dialectologists have argued whether some vowel sounds in Suzhou Chinese were diphthongs or monophthongs for many years.
text: The difference between the two transcriptions iswhether the three sounds are monophthongs or diphthongs.