Assertion: vowel | /r/HasProperty | problematic
Facets:
value: for non-native speakers
type: TRANSITIVE-OBJECT
value: often
type: DEGREE
value: very
type: DEGREE
Source sentences:
text: This vowel is influenced by dialect and is often very problematic for non-native speakers, particularly if they’re trying to learn to recognize different regional pronunciations of certain words and terms.