Assertion: diphthong's vowel | /r/HasProperty | ʊ
Facets:
Source sentences:
text: OK, I will search for more sources, because the semivowels in Portuguese is so closed that some sequences of words like quem é? sounds like if it was written quenhé?, and there are even some derived words in our vocabulary like nenhum (none), derived from nem um, and when a British speaks the word year it sounds like iê for us, your vowels [ʊ] and [ɪ], essentially the [ɪ], resembles a bit like the ô and ê.
text: In any case, the open vowel component of the diphthongs changes to a mid vowel ([ʌ], [ɐ], [ɛ] or [ə]).