Assertion: grade school's grade | /r/HasProperty | done in numbered semesters
Facets:
value: the first semester lasting
type: TEMPORAL
Source sentences:
text: Schooling is compulsory until the tenth grade (which corresponds with the age of 16 or 17).The education process is done in numbered semesters, the first semester lasting 15 weeks between September and December and the second semester lasting 20 weeks between January and June.