Assertion: device's feature | /r/HasProperty | introduced in firefox version
Facets:
value: to protect against tracking
type: PURPOSE
value: the same year
type: TEMPORAL
Source sentences:
text: In 2015, a feature to protect against browser fingerprinting was introduced in Firefox version 41, but it has been since left in an experimental stage, not initiated by default.
text: The same year a feature named Enhanced Tracking Protection was introduced in Firefox version 42 to protect against tracking during private browsing by blocking scripts from third party domains found in the lists published by the company Disconnect.