Assertion: backpack | /r/HasProperty | tilted more than 45 degrees
Facets:
value: to enable the user
type: PURPOSE
Source sentences:
text: There are a number of safety features built into newer backpack models, such as audible speakers that sound when the unit is operating, tilt-switches that incapacitate the electrofisher if the backpack is tilted more than 45 degrees, and quick-release straps to enable the user to quickly remove the electrofisher in the event of some emergency.