Assertion: diphthong's vowel | /r/HasProperty | nasal
Facets:
Source sentences:
text: Vowels before the letters m and n may be nasal.
text: The graphemes â, ê, ô and é typically represent oral vowels, but before m or n followed by another consonant (or word final -m in the case of ê and é), the vowels represented are nasal.