Assertion: homework's time | /r/HasProperty | 20
Facets:
Source sentences:
text: For, primary, upper elementary, middle school, and high school grades, the optimal time is about 20, 40, 60, and 90 minutes, respectively.
text: For, primary, upper elementary, middle school, and high school grades, the optimal time is about 20, 40, 60, and 90 minutes, respectively.