Assertion: school district | /r/CapableOf | affect the comparability of estimates
Facets:
value: over time
type: TEMPORAL
Source sentences:
text: This product has two purposes: 1) to indicate when there have been changes to the borders or grade-span of a school district which might affect the comparability of estimates over time, and 2) to provide a crosswalk that allows users to create trends for new or closed districts by combining data.