Assertion: student | /r/CapableOf | take three to five years
Facets:
value: to become proficient
type: PURPOSE
value: typically
type: TEMPORAL
Source sentences:
text: A landmark study of California ELLs in 2000 found students in both bilingual and sheltered English programs typically took three to five years to become proficient in oral English and five to seven years to become proficient in academic English.