Assertion: blackout | /r/ObjectUse | used as a public safety measure
Facets:
value: such as to prevent a gas leak
type: PURPOSE
Source sentences:
text: Blackouts are also used as a public safety measure, such as to prevent a gas leak from catching fire (for example, power was cut to several towns in response to the Merrimack Valley gas explosions), or to prevent wildfires around poorly maintained transmission lines (such as during the 2019 California power shutoffs).