Assertion: english diphthong | /r/HasProperty | single phonemes
Facets:
value: usually
type: TEMPORAL
value: as an example
type: MANNER
Source sentences:
text: As an example, the English diphthongs are usually considered single phonemes because they (mostly) originated historically as monophthongs, alternate with monophthongs in pairs such as divine vs. divinity, maintain their coherence when another vowel follows, and other, similar-looking diphthongs like [/eu/] do not exist in the language.[citation needed]