Assertion: forest fire | /r/CreatedBy | lightning strikes
Facets:
value: naturally
type: MANNER
Source sentences:
text: They can be caused by naturally occurring events, like lightning strikes, but this year most are thought to have been started by farmers and loggers clearing land for crops or grazing.
text: They can be caused by naturally occurring events, such as lightning strikes, but this year most are believed to have been started by farmers and loggers clearing land for crops or grazing.