Assertion: grade school's grade | /r/HasProperty | borne
Facets:
value: out of the british system
type: OTHER
value: up until the 1960s
type: TEMPORAL
Source sentences:
text: Up until the 1960s, grading in Ontario had been borne out of the British system, in which no more than 5% of students were given As, and 30% given Bs.