Assertion: android | /r/CapableOf | build upon significant changes
Facets:
value: in an effort
type: TEMPORAL
value: release android honeycomb
type: OTHER
Source sentences:
text: Unveiled on October 19, 2011, Android 4.0 builds upon the significant changes made by the tablet-only release Android Honeycomb, in an effort to create a unified platform for both smartphones and tablets.